In the Ruby expression a.fo0 , which calls method foo on receiver a, which of the following conditions affects whether the call succeeds? a responds to the foo method. a 's class, or one of its...

Extracted text: In the Ruby expression a.fo0 , which calls method foo on receiver a, which of the following conditions affects whether the call succeeds? a responds to the foo method. a 's class, or one of its superclasses or included modules, implements method_missing in a way that handles the foo method. a is an instance of a class, rather than the class itself. a has the correct type.