You are testing a Windows Phone 7 application that uses a large amount of device memory at run time. According to the Windows Phone 7 application certification requirements, the application must not use more than 90 MB of device memory if a devices physical memory is only 256 MB. You need to ensure that the application conforms to the application certification requirements. Which properties of the DeviceExtendedProperties class should be used to test the application? (Each correct answer presents part of the solution. Choose all that apply).

A.
DeviceTotalMemory

B.
DeviceManufacturer

C.
DeviceFirmwareVersion

D.
DeviceHardwareVersion

E.
ApplicationPeakMemoryUsage

F.
ApplicationCurrentMemoryUsage