Your organization has a n Active Directory Domain Services (AD DS) domain. All client computers run Windows 7. You u se Microsoft System Center Virtual Machine Manager (VMM) 2008 R2 to manage your Hyper - V hosts. Your environment includes Microsoft Enterprise Desktop Virtualization (MED - V). You plan to deploy a virtual machine (VM) image to all client computers. You need to ensure that user state information is maintained between sessions in the VM. What should you do?（）

• A、Use VMM to configure placement settings.
• B、Configure a MED - V revertible workspace policy.
• C、Configure a MED - V persistent workspace policy.
• D、Use Hyper - V M anager to create a revert snapshot.