Which of the following is true about interface in Object-oriented programming?

Question

A. An interface cannot extend another interface.
B. A class uses the super keyword to implement an interface.
C. It is implicitly abstract you do not need to use the abstract keyword when declaring an interface.
D. Each method in an interface is abstract so it should be declared using abstract keyword.

Answer 1

C. It is implicitly abstract you do not need to use the abstract keyword when declaring an interface.