What should you do?

You are working as an 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. You have received instructions from the CIO to perform an authoritative restore the entire Active Directory database.
What should you do?

A.
The best option is to restore active directory.

B.
The best option is to restore database.

C.
The best option is to restore subtree.

D.
The best option is to restore all.

Explanation:
137
The restore database command directs the ntdsutil application to execute an authoritative restore of the whole Active Directory database.