HELLO WORLD_Trim Series_1.0

using System;
namespace HelloWorld1
{
    class TrimMethod
 {
        static void Main(string[] args)
  {
            string x ="ABCD EF";
   
           //Console.WriteLine(x.Trim("F"));FAILURE*1
   
            Console.WriteLine(x.Trim());//@1
            Console.WriteLine(x.Trim('F','E',' '));//@2
            Console.WriteLine(x.Trim("FE ".ToCharArray()));//@3
            Console.ReadKey();
  }
 }
}