You have an Exchange Server 2007 environment. Your environment contains the servers shown in the following table

A hardware failure occurs on Server2.
You need to recover the Hub Transport role to one or more of the other servers.
What should you do?

A.
Recover the Hub Transport server role on Server1

B.
Recover the Hub Transport server role on Server3

C.
Recover the Hub Transport server role on Server4

D.
Move the Client Access server role to Server1. Recover the Hub Transport server role on Server3