You need to recommend a routing group configuration that meets the business requirements of Fabrikam.

What should you include in the recommendation?

A.
one routing group for each office that contains all of the Exchange servers in that office

B.
one routing group for each office that contains only the Exchange Server 2003 servers in that office and one routing group for each office that contains only the Exchange Server 2010 SP1 servers in that office

C.
one routing group for each office that contains only the Exchange Server 2003 servers in that office and one routing group that contains all of the Exchange Server 2010 SP1 servers

D.
one routing group that contains all of the Exchange Server 2003 servers and all of the Exchange Server 2010 SP1 servers