You work as a Web Developer at Certkiller.com. You are in the process of creating a Webapplication using Microsoft ASP.NET 3.5.  You decide to enable session state for the application. You need to determine whether the sessionID is maintained in the URL of the request.  What should you do？（）

• A、The RequestType property of the HttpRequest class should be accessed.
• B、The IsCookieless property of the HttpSessionState class should be accessed.
• C、The UrlDecode method of the HttpServerUtility class should be accessed.
• D、The UrlEncode method of the HttpServerUtility class should be accessed.