7. What is the output of the following code sequence? package javaapplication123; public class Sup \{ void who0 \{System.out.printin("who in Sup");1 \} package javaapplication123; class Subl extends Sup \{ void who0 \{ System.out.printin("who0 in Sub1"): \} 1 package javaapplication 123; class Sub2 extends Sup 1 void who0 ( System.out.printin("who0 in Sub2"); ) 1 package javaapplication 123; public class JavaApplication 123 \& public static void main(String II args) f Sup superOb = new SupO; Subl subObl = new Sub10; Sub2 subOb2 = new Sub20; Sup supRef; supRef a superOb; supRef.who0; supRef = subObl supRef.whoO; supRef = subOb2; supRefwho0: 1