Question: public abstract class A { 2 public String toString ( ) { return A ; } 3 } / / class A 4

public abstract class A{
2 public String toString(){ return "A"; }
3}//class A
4 class B extends A{
5 public String display(String s){ return s; }
6
7 public String display(int i){ return "answer ="+ i *20; }
8
9 public String toString(){ return super.toString()+"B"; }
10}//Class B
11
12 class C extends B{
13 public String display(String s){ return "C "+ s; }
14}//class C

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