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

class A
{
    public int i;
    public void display() 
    {
        Console.WriteLine(i);
    }
}    
class B: A 
{
    public int j;
    public void display() 
    {
        Console.WriteLine(j);
    }
}    
class Program
{
    static void Main(string[] args)
    {
        B obj = new B();
        obj.i = 1;
        obj.j = 2;
        obj.display();
        Console.ReadLine();
    }
}

A. 0

B. 2

C. 1

D. Compile time error

Answer: Option B