def answer_three():
    df = df[(df['Gold'] > 0) & (df['Gold.1'] > 0)]
    df['diff gold %'] = (df['Gold']-df['Gold.1']).abs()/df['Gold.2']
    df = df.dropna()
    return df['diff gold %'].idxmax()

def answer_three():
    new_df = df.where((df['Gold'] > 0) & (df['Gold.1'] > 0))
    new_df['Gold %'] =  new_df['Gold']/new_df['Gold.2']
    new_df['Gold.1 %'] = new_df['Gold.1']/new_df['Gold.2']
    new_df['diff gold %'] = (new_df['Gold %']-new_df['Gold.1 %']).abs()
    new_df = df[df['diff gold %'] == df['diff gold %'].max()]
    return new_df.index[0]