Your company has a Microsoft Exchange Server 2007 environment. Employees have Windows Mobile 6.5 devices. You manage the devices by using Microsoft System Center Mobile Device Manager (MDM) 2008. Multiple users store a specific file on their Windows Mobile devices. You need to ensure that the file is encrypted on all Windows Mobile devices.
What should you do?

A.
Enable the Specify device encryption list Group Policy setting.

B.
Enable the Exclude files from device encryption Group Policy setting.

C.
Run the Set-MobilePolicyServiceConfig Windows PowerShell cmdlet.

D.
Run the Update-MobilePolicyServiceConfig Windows PowerShell cmdlet.