You are testing a Windows Phone 7 application for performance. The application occasionally seems sluggish and slow to respond to user input. The application relies heavily on graphics rendering. You suspect that some areas of the UI are relying excessively on software drawing and are therefore negatively impacting system performance. You need to be able to monitor graphics performance to determine if excessive software drawing is taking place. Which property of the Windows.System.Interop.Settings class should be modified to monitor graphics performance?

A.
MaxFrameRate

B.
EnableRedrawRegions

C.
EnableGPUAcceleration

D.
EnableFrameRateCounter