Your network consists of one Active Directory forest that contains one domain.
The functional level of the forest is Windows 2000.
The functional level of the domain is Windows 2000 native.
Two domain controllers run Windows Server 2008 and three domain controllers run Windows Server 2003. Service packs are not installed on any of the domain controllers. You plan to enable Windows BitLocker Drive Encryption (BitLocker) on all domain controllers.
You need to store all BitLocker recovery information in Active Directory Domain Services (AD DS).
What should you do first?
A.
Raise the forest functional level to Windows Server 2003.
B.
Raise the domain functional level to Windows Server 2003.
C.
Upgrade all Windows Server 2003 domain controllers to Windows Server 2008.
D.
Extend the Active Directory schema to include BitLocker and Trusted Platform Module (TPM) attributes.