What is one of the features of deploying Cisco Unified Communications Manager servers in a 1:1 redundancy design?
A. When the primary servers approach 100% utilization, the backup servers can take over a portion of the load
B. If a single primary server fails, multiple servers can distribute the load generated by users reregistering from the failed server.
C. If multiple servers fail concurrently, the resulting load generated by users reregistering does not overwhelm the dedicated backup servers due to 1:1 redundancy.
D. Recovery happens faster when the load generated by the users from a failed server is spread over more than one backup server
