Consider the following class definitions.public class BClass{    private int x;    public void set(int a) { x = a; }    public void print(){ }}public class DClass extends BClass{    private int y;    public void set(int a, int b)     {         //Postcondition: x = a; y = b;    }    public void print(){ }}Which of the following is the correct definition of the method set of the class DClass?(i)   public void set(int a, int b)   {      super.set(a);      y = b;   }(ii)    public void set(int a, int b)   {      x = a;
y = b;
   }

A. Only (i)     
B. Only (ii)
C. Both (i) and (ii)
D. None of these

Answer: A