Which of the following statements about overriding a method are correct? (Choose three.)

A. The return types must be covariant.

B. The access modifier of the method in the child class must be the same or narrower than the method in the superclass.

C. The return types must be the same.

D. A checked exception thrown by the method in the parent class must be thrown by the method in the child class.

E. A checked exception thrown by a method in the child class must be the same or narrower than the exception thrown by the method in the parent class.

F. The access modifier of the method in the child class must be the same or broader than the method in the superclass.