Which are true statements about interfaces and abstract classes?

Each correct answer represents a complete solution. Choose all that apply.

A Both abstract classes and interfaces can have abstract methods.

B Both abstract classes and interfaces can have public constructors.

C Interfaces can only extend other interfaces, while abstract classes can extend both abstract and concrete classes.

D Unlike abstract classes, interfaces can be marked final.

E Abstract classes offer support for single inheritance, while interfaces offer support for multiple inheritance.

F All methods in abstract classes are implicitly public, while interfaces can

use various access modifiers for their methods and variables, including

private in some cases.