You are the administrator of an Active Directory domain named A user reports that he cannot log on to a Windows Server 2003 computer that contains a critical application. You discover that the organizational unit (OU) in which the server is located was deleted. You discover that the user rights for this server are controlled by Group Policy. You need to restore access to the server. You need to achieve this goal by using the minimum amount of administrative effort. What should you do?（）

A. Perform a normal restoration of the System State data for the domain controller. Force replication.
B. Perform an authoritative restoration of the System State data for the domain controller. Mark the OU for replication.
C. Re-create the OU that was deleted. Reapply Group Policy, and then add the computer account and any necessary users or groups.
D. Perform an Automated System Recovery (ASR) restoration on the domain controller.