class Super { <br /> public Integer getLenght() { return new Integer(4); }<br /> } <br /> public class Sub extends Super { <br /> public Long GetLenght() { return new Long(5); } <br /> public static void main(String[] args) {<br /> Super sooper = new Super(); <br /> Sub sub = new Sub(); <br /> System.out.println( <br /> sooper.getLenght().toString() + “,” + <br /> sub.getLenght().toString() );<br /> }<br /> } <br /> What is the output?()  
A、 4,4
B、 4,5
C、 5,4
D、 5,5
E、 Compilation fails.