Your network consists of one Active Directory forest. The functional level of the forest is Windows Server 2003.
You upgrade all domain controllers from Windows Server 2003 SP2 to Windows Server 2008 R2. You plan to deploy the first read-only domain controller (RODC) in the forest.
You need to prepare the network for the installation of the RODC.
What should you do?
A.
Run adprep /rodcprep on any computer in the forest.
B.
Run adprep /forestprep on the schema operations master server.
C.
Raise the forest functional level to Windows Server 2008 R2.
D.
Raise the domain functional level to Windows Server 2008 R2.