C# Static Issue

public class MenuButton : SpriteObject
    {
        //Menu buttons have a windows phone theme background, which is iteself a SpriteObject
        private static SpriteObject background;

        //Different Icons, static for loading
        private static Texture2D playButtonIcon;
        private static Texture2D highscoreButtonIcon;
        private static Texture2D settingButtonIcon;
        private static Texture2D aboutButtonIcon;
        private static Texture2D reviewButtonIcon;
        private static Texture2D brownsoftAppsIcon;
        private static Texture2D websiteIcon;

        //The tap countdown stops users from "pressing" a button constantly by holding their finger down in one place
        public static int TapCountdown = 0;

        //Constructor which forces size to be chosen and a button type
        public MenuButton(int requestedX, int requestedY, int requestedWidth, int requestedHeight, MenuButtonType requestedMenuButtonType)
            : base(requestedX, requestedY, requestedWidth, requestedHeight)
        {
            background = new SpriteObject(requestedX, requestedY, requestedWidth, requestedHeight);
            switch (requestedMenuButtonType)
            {
                case MenuButtonType.play:
                    spriteTexture = playButtonIcon;
                    break;

                case MenuButtonType.highscore:
                    spriteTexture = highscoreButtonIcon;
                    break;

                case MenuButtonType.settings:
                    spriteTexture = settingButtonIcon;
                    break;

                case MenuButtonType.about:
                    spriteTexture = aboutButtonIcon;
                    break;

                case MenuButtonType.review:
                    spriteTexture = reviewButtonIcon;
                    break;

                case MenuButtonType.brownsoftApps:
                    spriteTexture = brownsoftAppsIcon;
                    break;

                case MenuButtonType.website:
                    spriteTexture = websiteIcon;
                    break;
            }
        }

        //Method used to load all the private texture icons and transparent background
        public static void LoadContent(ContentManager Content)
        {
            //Windows Phone Theme Background
            background.spriteTexture = Content.Load<Texture2D>("Menu Items/Menu Buttons/WhiteBlank");

            //Main Menu Icons
            playButtonIcon = Content.Load<Texture2D>("Menu Items/Menu Buttons/PlayButtonIcon");
            highscoreButtonIcon = Content.Load<Texture2D>("Menu Items/Menu Buttons/HighscoreButtonIcon");
            settingButtonIcon = Content.Load<Texture2D>("Menu Items/Menu Buttons/SettingsButtonIcon");
            aboutButtonIcon = Content.Load<Texture2D>("Menu Items/Menu Buttons/AboutButtonIcon");

            //About Menu Icons
            brownsoftAppsIcon = Content.Load<Texture2D>("Menu Items/Menu Buttons/BrownsoftAppsButtonIcon");
            reviewButtonIcon = Content.Load<Texture2D>("Menu Items/Menu Buttons/ReviewButtonIcon");
            websiteIcon = Content.Load<Texture2D>("Menu Items/Menu Buttons/WebsiteButtonIcon");
        }

        //Method to detect if the button is currently being tapped
        public bool IsTapped(TouchCollection tc)
        {
            if (tc.Count == 0)
            {
                //If there are no fingers on the screen the button cannot be being touched, return false
                return false;
            }
            else
            {
                //There are fingers on the screen, check if any are touching the button

                //
                Rectangle fingerPosition;
                for (int i = 0; i < tc.Count; i++)
                {
                    fingerPosition = new Rectangle((int)tc[i].Position.X, (int)tc[i].Position.Y, 1, 1);

                    if(fingerPosition.Intersects(this.spriteRectagle) && TapCountdown == 0)
                    {
                        TapCountdown = 5;
                        return true;
                    }
                }
                return false;
            }
        }

        //Override the Draw method here because we need to draw both the background and the foreground Icon
        public override void Draw(SpriteBatch sb)
        {
            background.Draw(sb, WindowsPhoneTheme.getTileColour());
            base.Draw(sb);
        }
    }
}