Remove All of an Element's Attributes in CSharp

using System;/*from ww w .  j  a va 2 s  .  co m*/
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 firstParticipant;
        XDocument xDocument = new XDocument(
          new XElement("Books", firstParticipant =
            new XElement("Book",
              new XAttribute("type", "Author"),
              new XAttribute("experience", "first-time"),
              new XElement("FirstName", "A"),
              new XElement("LastName", "B"))));

        Console.WriteLine(xDocument);
        firstParticipant.Attributes().Remove();
        Console.WriteLine(xDocument);
    }
}