Write a C# Sharp program to check a given array (length will be at least 2) of integers and return true if there are two values 15, 15 next to each other

using System;
namespace exercises
{
   class Program
    {       
        static void Main(string[] args)
        {               
         Console.WriteLine(test(new[] { 5, 5, 1, 15, 15 })); 
         Console.WriteLine(test(new[] { 15, 2, 3, 4, 15 })); 
         Console.WriteLine(test(new[] { 3, 3, 15, 15, 5, 5})); 
         Console.WriteLine(test(new[] { 1, 5, 15, 7, 8, 15})); 
          }               
        static bool test(int[] numbers)
         {
         for (int i = 0; i < numbers.Length - 1; i++)
            {
                if (numbers[i + 1] == numbers[i] && numbers[i] == 15) return true;
            }
            return false;
         }
    
    } 
}