If the primary Cisco Unified Communications Manager in a group fails, what happens to the devices that were configured to use the primary Unified Communications Manager?
A. All devices are disconnected.
B. All devices connect to the next listed Cisco Unified CallManager in the group.
C. All devices randomly select a Cisco Unified CallManager in the group.
D. All devices wait for the failed Cisco Unified CallManager to come back online.
