how to find even and odd in given Array in LINQ

List<int> list = new List<int>() { 20,21,36,30,31,35,89,99,12,39,19};
            IEnumerable<IGrouping<int, int>> g = from l in list group l by l % 2;
            foreach (var group in g)
            {
                Console.WriteLine(group.Key==0 ? "even numbers :" : "Odd Numbers :");
                foreach (var i in group)
                    Console.WriteLine(i);
            }
            Console.ReadKey();