You are a system administrator for your company. The network has two Active Directory forests. The forests run at the Windows Server 2003 functional level. Each forest has a single domain. All servers in the network run Windows Server 2008.You install System Center Data Protection Manager (DPM) 2007 Service Pack 1 on a server in one of the forests. You want to protect the system state of a domain controller from another forest by using the DPM agent. You need to configure the network before you deploy the DPM agent on the domain controller. What should you do?

A.
Establish a two-way trust between the forests.

B.
Raise the functional level of the forests to Windows Server 2008.

C.
Extend the schema in the forest with the DPM 2007 server to support End User Recovery (EUR).

D.
Extend the schema in the forest with the domain controller to support End User Recovery (EUR).