objective c categories and inheritance

If a method is defined in both a class and a category on that class, it is undefined which implementation will be called.

But how does this interact with inheritance? Specifically:

• Given a superclass category method and a regular method in the subclass, is it guaranteed that the subclass implementation will win when called on a member of the subclass?
• Given a superclass regular method and a subclass category method trying to override it, is it guaranteed that the subclass category implementation will win when called on a member of the subclass?
• Given a superclass category method and a subclass category method, is it guaranteed that the subclass category method will win when called on a member of the subclass?