drush create-denver-type --name="some title" --title="some title" --options="apple" --userid="myid"

foreach ($options as $opt => $value) {
     switch ($opt) {
         case 'Apples' :
             function1();
             break ;
         case 'Pears' :
              function2();
             break ;
         case 'Orange' :
              function2();
             break ;
      }
 }

$options = drush_get_option_list('options');