What should you do?

You are the newly appointed enterprise administrator at Domain.com. The Domain.com network consists of a single Active Directory forest that contains a single domain named Domain.com. All servers on the Domain.com network run Windows Server 2008.
Domain.com contains a domain controller named CERTKILLER-DC01. You have just completed the backup of the system state on CERTKILLER-DC01. However, a few days after the backup, you have received instructions from the CIO to restore the system state.
What should you do?

A.
The best option is to log on to CERTKILLER-DC01 and run wbadmin.exe to restore the system state.

B.
The best option is to first stop the Active Directory Domain Services and run the wbadmin.exe to restore system state.

C.
The best option is to restart CERTKILLER-DC01 and go into DSRM and run wbadmin exe to execute the system state restore.

D.
The best option is to use the Windows Server Backup Wizard and restore system state.

Explanation:
You must be in DSRM to recover the system state of CERTKILLER-DC01. To use the wbadmin.exe command, you must be in DSRM.
Incorrect Answers:
A: You cannot restore CERTKILLER-DC01 in normal mode.
B: If you stop the AD DS, it will not allow you to restore the system state.