What will be the output of the following Java program?

import java.util.*;
public class genericstack <E>
{
    Stack  stk = new Stack <E>();
public void push(E obj) 
    {
        stk.push(obj);
}
public E pop() 
    {
        E obj = stk.pop();
  return obj;
}
}
class Output
{
    public static void main(String args[])
    {
        genericstack <String> gs = new genericstack();
        gs.push("Hello");
        System.out.println(gs.pop());
    }
}

A. H

B. Hello

C. Runtime Error

D. Compilation Error

Answer: Option B