What should you identify?

You work as the network administrator at Domain.com. The Domain.com network consists of a single Active Directory domain named Domain.com. Domain.com recently employed Windows Server 2008.
A number of Domain.com remote sites do not have a very secure security policy in place. You therefore decide to implement read-only domain controllers (RODC) at these sites. You need to determine the forest and function level the network will require in order to do the installation.
What should you identify?

A.
You should consider installing Windows 2008.

B.
You should consider installing Windows 2000 Mixed.

C.
You should consider installing Windows 2000 Native.

D.
You should consider installing Windows 2003.

Explanation:
The forest and function levels have to be Windows 2003 or above to install a RODC.