What will be the output of the following Java program?

interface calculate 
{
            int VAR = 0;
            void cal(int item);
}
        class display implements calculate 
        {
            int x;
          public  void cal(int item)
          {
                if (item<2)
                    x = VAR;
                else
                    x = item * item;            
            }
        }
 class interfaces 
{
 
            public static void main(String args[]) 
            {
                display[] arr=new display[3];
 
               for(int i=0;i<3;i++)
               arr[i]=new display();
               arr[0].cal(0);    
               arr[1].cal(1);
               arr[2].cal(2);
               System.out.print(arr[0].x+" " + arr[1].x + " " + arr[2].x);
            }
}

a) 0 1 2
b) 0 2 4
c) 0 0 4
d) 0 1 4