You are designing a Windows Phone 7 application. The application downloads data from a companys web pages. The UI is not responding while downloading this data. You need to recommend an update to the application to prevent it from being unresponsive while downloading data. What should you recommend?

A.
Use the OpenReadAsync() method of the WebClient class.

B.
Use the BeginGetRequest() method of the WebClient class.

C.
Use the BeginGetRequest() method of the HttpWebRequest class.

D.
Use the DownloadStringCompleted() method of the HttpWebRequest class.