You are transitioning an Exchange Server environment from Exchange Server 2007 SP2 to Exchange
Server 2010. You deploy all Exchange Server 2010 Client Access servers and Hub Transport servers,
and move Internet mail flow from Exchange Server 2007 SP2 to Exchange Server 2010. All mailboxes
are on Exchange Server 2007 SP2. Each message sent to a specific distribution group must be
approved by an executive assistant. You need to recommend a solution that meets the requirement.
What should you recommend?

A.
Configure the message delivery restrictions for the distribution group.

B.
Create an Exchange Server 2010 Hub Transport rule, and set an Exchange Server 2007 SP2 Hub
Transport server as the expansion server for the distribution group.

C.
Designate the executive assistant as the manager of the distribution group.

D.
Create an Exchange Server 2010 Hub Transport rule, and set an Exchange Server 2010 Hub
Transport server as the expansion server for the distribution group.

Explanation: