Your network has a single domain with 1，000 client computers that run Windows 7.  Users frequently copy data from their computers to removable drives.    You need to ensure that data that is copied to removable drives is protected.   What should you do？（）  

• A、Use Encrypting File System （EFS）.
• B、Use Active Directory Rights Management Services.
• C、Configure a Group Policy to enforce the use of BitLocker To Go.
• D、Enable Trusted Platform Module （TPM） hardware on all client computers.