Which methods should be implemented within IKEALamp, so that it compiles? public interface OnOffable \{ void turnOn(); void turnOff(); public interface Manipulable extends OnOffable \{ void turn(int x, int y); \} public abstract class Lamp implements| Manipulable \{ public abstract void install(); public void replace ()\{ \}* Implementation */ \} public class IKEALamp extends Lamp \{ \} What methods must we implement here? */ a. replace() b. turn(int x, int y ) c. turnOn() d. install() e. turnOff()