What is the output of the following program ?


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What is the output of the following program ?


 class A {
     int i;
     void display() {
         System.out.println(i);
     }
 }    
 class B extends A {
     int j;
     void display() {
         System.out.println(j);
     }
 }    
 class inheritance_demo {
     public static void main(String args[]){
         B obj = new B();
         obj.i=1;
         obj.j=2;   
         obj.display();     
     }
 }

A. 1
B. 0
C. 2
D. Compile Time Error