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

A hardware failure occurs on Server1.
You need to perform a role recovery to one or both of the other servers.
What should you do?

A.
Install the Client Access server role on Server2. Install the Mailbox server role on Server3

B.
Install the Client Access server role on Server3. Install the Mailbox server role on Server2

C.
Install the Client Access server role and the Mailbox server role on Server2

D.
Install the Client Access server role and the Mailbox server role on Server3