If an interface called Something contains a method String doSomething$($String s$),$ then:A$.$ Every class that implements the interface must override a method implementation from the interfaceB. Classes that implement the interface can optionally override a method implementation from the interfaceC. Every class that implements the interface must have a method called doSomething that takes in a String, and returns a StringD. No class that implements the interface can have such a metho