Your network contains an Active Directory domain. The domain contains a file server named Server1 that runs Windows Server 2008 R2.
You need to ensure that a user named User1 can back up and restore files on Server1. The solution must minimize the number of user rights assigned to User1.
What should you do?
A. Add User1 to the Server Operators group.
B. Assign the Backup files and directories user right to User1.
C. Add User1 to the Backup Operators group.
D. Assign the Perform volume maintenance tasks user right to User1.
