find query with filter > sort > limit > project

Program.cs

using MongoDB.Entities;
using MongoDB.Entities.Core;
using System.Linq;

namespace StackOverFlow
{
    public class Item : Entity
    {
        public int a { get; set; }
        public int b { get; set; }
        public int c { get; set; }
        public int d { get; set; }
    }

    public static class Program
    {
        private static void Main()
        {
            new DB("test", "localhost");

            new Item
            {
                a = 5,
                b = 6,
                c = 11,
                d = 1
            }.Save();

            var id = DB.Find<Item, string>()
                       .Match(i => i.a == 5 && i.b == 6 && i.c == 11)
                       .Sort(i => i.d, Order.Descending)
                       .Limit(1)
                       .Project(i => i.ID)
                       .Execute()
                       .SingleOrDefault();
        }
    }
}