You need to recommend a message routing design for the period during which A . Datum transitions from Exchange Server 2003 to Exchange Server 2010 SP1. The solution must meet the business goals of A . Datum.
What should you include in the recommendation?
A.
a scoped Send connector that uses TOK-BE-1 as the source server and a scoped Send connector that uses BAN-BE-1 as the source server
B.
a scoped Send connector that uses TOK-HUB-1 as the source server and a scoped Send connector that uses BAN-HUB-1 as the source server
C.
an Exchange hub site for each site and Exchange-specific site link costs
D.
an Exchange hub site for each site and a Send connector that uses TOK-HUB1 and BAN-HUB1 as the source servers
why not D?