Analyze the C# code snippet given below and select the most appropriate choice.
using System; using System.Collections.Generic; public class Example { public static void Main() { IDictionary<string, string> openWith = new Dictionary<string, string>(); openWith.Add("txt", "notepad.exe"); openWith.Add("bmp", "paint.exe"); openWith.Add("dib", "paint.exe"); openWith.Add("rtf", "wordpad.exe"); openWith.Add("txt", "notepad.exe"); Console.WriteLine("\nKey Added"); } }