DRAG DROP
You are developing a Windows Store app that downloads large files from the Internet by using
background tasks.
The app includes the following:
TaskInstance is an instance of the IBackgroundTask interface that provides access to a background
task instance.
DownloadFilesAsync() is the asynchronous method that performs the download.
You need to ensure that the app performs the download operation asynchronously in a background
task.
Which three actions should you perform in sequence? (To answer, move the appropriate actions
from the list of actions to the answer area and arrange them in the correct order,)
Answer: 
Explanation:
http://msdn.microsoft.com/enus/library/windows/apps/windows.applicationmodel.background.backgroundtaskdeferral.aspx