XML LINQ C#

using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
using System.Xml;
using System.Xml.Linq;
public class MainClass {
    public static void Main() {
        XElement xElement =
          new XElement("Books",
          new XElement("Book",
          new XAttribute("type", "Author"),
          new XElement("FirstName", "J"),
          new XElement("LastName", "R")));
        Console.WriteLine(xElement.ToString());
    }
}