Which of the following may only be hidden and not overridden? (Choose all that apply)
A, D, E, F.
B and C are incorrect because protected and public methods may be overridden, not hidden.
A is correct because private methods are always hidden in a subclass.
D is correct because static methods cannot be overridden, only hidden.
E and F are correct because variables may only be hidden, regardless of the access modifier.