using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var foo = new[]{ "A", "B", "C"};

        var ran =new Random();

        var res = ran.Next(3);

        Console.WriteLine(ran);

        //Always same result

        Console.WriteLine(foo.OrderBy(x => ran).First());

        //Different result

        Console.WriteLine(foo.OrderBy(x => new Random().Next(3)).First());

    }

}