You are designing a Windows Phone 7 application. The application must notify users of their location. You need to recommend a way to maximize the battery life in the phone while providing location information. What should you recommend?

A.
Instantiate a new GeoCoordinate object and set the HorizontalAccuracy property to 1.

B.
Instantiate a new GeoCoordinate object and set the VerticalAccuracy property to 1.

C.
Instantiate a new instance of the GeoCoordinateWatcher class with the DesiredAccuracy value of High.

D.
Instantiate a new instance of the GeoCoordinateWatcher class with the DesiredAccuracy value of Default.