Your company has an Active Directory domain that runs Windows Server 2008 R2. The Sales OU  <br /> contains an OU for Computers, an OU for Groups, and an OU for Users. You perform nightly backups. An administrator deletes the Groups OU.   <br /> You need to restore the Groups OU without affecting users and computers in the Sales OU.   <br /> What should you do()
A、Perform an authoritative restore of the Sales OU.
B、Perform an authoritative restore of the Groups OU.
C、Perform a non-authoritative restore of the Groups OU.
D、Perform a non-authoritative restore of the Sales OU.