You have a System Center Operations Manager 2007 environment. You import several additional Microsoft management packs. The Root Management Server fails. You do not have a backup of the SDK encryption keys. You need to restore Operations Manager monitoring functionality to your environment. What should you do?

A.
Restore a Windows system state backup to the server hosting the Root Management Server role.

B.
Restore a backup of the Operations database. Reinstall the Root Management Server. Import the management packs that were installed prior to the failure.

C.
Reinstall all Operations Manager roles in a new Management Group. Install Operations Manager agents to all servers that need to be monitored. Import the management packs that were installed prior to the failure.

D.
Reinstall the Root Management Server. Import the management packs that were installed prior to the failure.