What will be the output of the following C# code?

namespace ConsoleApplication4
{
    public abstract class A
    {
        public int i = 7;
        public abstract void display();
    }    
    class B: A 
    {
        public int j;
        public override void display() 
        {
            Console.WriteLine(i);
            Console.WriteLine(j);
        }
    }    
    class Program
    {
        static void Main(string[] args)
        {
            B obj = new B();
            A obj1 = new B();
            obj.j = 1;
            obj1.i = 8;
            obj.display();
            Console.ReadLine();
        }
    }
}

A. 0, 8

B. 1, 8

C. 1, 7

D. 7, 1

Answer: Option D