Your network contains a single Active Directory domain. The domain contains five read-only
domain controllers (RODCs) and five writable domain controllers. All servers run Windows
Server 2008.
You plan to install a new read-only domain controllerRODC that runs Windows Server 2008
R2.
You need to ensure that you can add the new RODC to the domain.You want to achieve this
goal by using the minimum amount of administrative effort.
Which two actions should you perform? (Each correct answer presents part of the solution.
Choose two.)

A.
At the command prompt, run adprep.exe /rodcprep.

B.
At the command prompt, run adprep.exe /forestprep.

C.
At the command prompt, run adprep.exe /domainprep.

D.
From Active Directory Domains and Trusts, raise the functional level of the domain.

E.
From Active Directory Users and Computers, pre-stage the RODC computer account.