You are designing a Windows Phone 7 application that supports portrait or landscape orientations. You need to display a video in the application that responds to changes in device orientation. What should you recommend?

A.
Add a MediaElement control to the page. Then add a PlaneProjection transform and set the RotationX property to 90.

B.
Add a MediaElement control to the page. Then add a RotateTransform transform and set the Angle property to 90.

C.
Add a MediaElement control to the page. Then set the source of the MediaElement control to the appropriate video file.

D.
Set the source of a new MediaElement control to the appropriate video file. Then add the MediaElement control to the page.