Given that Integer and Long are direct subclasses of Number, what type can be used to fill in the blank in the following class to allow it to compile? 

A. Long

B. Integer

C. Long or Integer

D. Long or Number

E. Long, Integer, or Number

F. None of the above

Transcribed Image Text:

package orchestra; interface MusicCreator { public Number play(); } abstract class StringInstrument { public Long play() {return 3L;} } public class Violin extends StringInstrument implements MusicCreator { play() { } public } return null;