Development Class C#

using System;
public class RollDie
{
   public static void Main( string[] args )
   {
      Random randomNumbers = new Random(); 
      int frequency1 = 0; 
      int frequency2 = 0; 
      int frequency3 = 0; 
      int frequency4 = 0; 
      int frequency5 = 0; 
      int frequency6 = 0; 
      int face; 
      for ( int roll = 1; roll <= 6000; roll++ )
      {
         face = randomNumbers.Next( 1, 7 ); 
         switch ( face )
         {
            case 1:
               frequency1++; 
               break;
            case 2:
               frequency2++; 
               break;
            case 3:
               frequency3++; 
               break;
            case 4:
               frequency4++; 
               break;
            case 5:
               frequency5++; 
               break;
            case 6:
               frequency6++; 
               break;
         }  
      } 
      Console.WriteLine( "Face\tFrequency" ); // output headers
      Console.WriteLine( "1\t{0}\n2\t{1}\n3\t{2}\n4\t{3}\n5\t{4}\n6\t{5}",
         frequency1, frequency2, frequency3, frequency4,
         frequency5, frequency6 );
   }
}