What else should you do?

You have a server named Server1 that has the ActiveDirectory Certificate Services server role installed.
Server1 uses a hardware security module (HSM) to protect the private key of Server1.
You need to ensure that the Active Directory Certificate Services (AD CS) database, log files, and private key
are backed up.
You perform regular backups of the HSM module by using a backup utility provided by the HSM manufacturer.
What else should you do?

A.
Run the certutil.exe command and specify the -backupkey parameter.

B.
Run the certutil.exe command and specify the -backupdb parameter.

C.
Run the certutil.exe command and specify the -backup parameter.

D.
Run the certutil.exe command and specify the -dump parameter.

Explanation:
http://technet.microsoft.com/library/cc732443.aspx
http://technet.microsoft.com/library/cc732443.aspx#BKMK_backupDB