C# List as a Stack

using System;
using System.Collections;
using System.Collections.Generic;

class MainClass {

  public static void PrintList<T>(List<T> l)
  {

   for (int i = l.Count - 1; i >= 0 ; i--) 
    {
      Console.WriteLine(l[i].ToString());
    }
  }

  public static void Push(char s, List<char> l)
  {
    l.Add(s); // adds to the back of the list, which we'll call the head.
  }

  public static char Pop(List<char> l)
  {
    char element = l[l.Count - 1];
    l.RemoveAt(l.Count - 1);
    return element;
  }

  public static void Main (string[] args) {
    Console.WriteLine ("Push a, b, c");
    List<char> l = new List<char>();
    Push('a', l);
    Push('b', l);
    Push('c', l);
    PrintList<char>(l);
    Console.WriteLine ("Calling pop");
    Console.WriteLine("Popped: " + Pop(l));
    PrintList<char>(l);
  }
}