Which two behaviors are correct when Cisco Unified CM has a CallManager group that consists of two subscribers? (Choose two.)
A. If a subscriber is rebooted, endpoint registrations switch to the other subscriber, then switch back when the rebooted subscriber is back in service.
B. Endpoints attempt to register with both subscribers in a load-balanced method
C. If a subscriber is rebooted, endpoints deregister until the rebooted subscriber is back in service
D. Endpoints attempt to register with the bottom subscriber in the list
E. Endpoints attempt to register with the top subscriber in the list
