Write a C# Sharp program to create a new list from a given list of integers where each integer multiplied by itself three times

using System;
using System.Collections.Generic;
using System.Linq;
namespace exercises
{
   class Program
    {       
        static void Main(string[] args)
        {            
           List mylist = test(new List(new int[] { 1, 2, 3 , 4 }));                  
           foreach(var i in mylist)
            {
               Console.Write(i.ToString()+" ");
            }     
        }                  
        public static List test(List nums)
          {
            IEnumerable squared = nums.Select(x => x * x * x);
            return squared.ToList();
          }    
    } 
}