Which of the Following Statements About Interfaces Is False

question 23

Multiple Choice

Which of the following statements about interfaces is false?

• A)An interface describes a set of methods that can be called on an object,providing a default implementation for the methods.
• B)An interface describes a set of methods that can be called on an object,not providing concrete implementation for the methods.
• C)Interfaces are useful when attempting to assign common functionality to possibly unrelated classes.
• D)Once a class implements an interface,all objects of that class have an is-a relationship with the interface type.