A customer has Microsoft Exchange 2007 running on a Windows 2003 server. They have installed
the Exchange 2007 Avamar client plug-in (without VSS) and have been performing regular
backups of their server. They want to restore an individual message.
What is a prerequisite to accomplish this task?

A.
MAPI must have been installed on the client

B.
A full backup must have been performed

C.
Recovery Storage Groups must be used

D.
Restore must be to a passive node in the CCR