Your company has a Windows Server 2003 Active Directory forest that contains a single domain. The
functional level of the forest is set to Windows 2000 native. You have an Exchange organization that
contains Exchange Server 2003 Service Pack 2 (SP2) and Exchange Server 2007 Service Pack 2 (SP2)
servers. You plan to transition the organization to Exchange Server 2010. You need to prepare Active
Directory for the installation of the first Exchange Server 2010 server. What should you do?

A.
Set the functional level of the forest to Windows Server 2003.

B.
Prepare the legacy Exchange permissions from the Exchange Server 2010 installation source files.

C.
Add the Exchange Server 2010 schema extensions by using the Exchange Server 2010 installation
source files.

D.
Upgrade all domain controllers to Windows Server 2008, and then set the functional level of the
domain to Windows Server 2008.