You Are the New Administrator for Example

Multiple Choice

You are the new administrator for Example.com domain.Last week,the original Windows Server 2003 domain controller that was used to create the Example.com forest went offline permanently.This was the last Windows Server 2003 server in the entire forest,and because all servers now run Windows Server 2008,you have decided that it would be a good time to raise the forest functional level to Windows Server 2008.However,your attempt to do so fails.
What could be the issue?

A) The domain naming master for the domain is offline,preventing domain related administration
B) The PDC emulator master is down,preventing your credentials from being accepted
C) The Schema master is down,preventing any schema changes.
D) Because the functional level was set at Windows Server 2003,only a Windows Server 2003 server can raise the functional level.