Which Two Configuration Parameters Are Prerequisites to Set Native Call

Multiple Choice

Which two configuration parameters are prerequisites to set Native Call Queuing on Cisco UCM? (Choose two.)

A) Cisco IP Voice Media Streaming Service must be activated on at least one node in the cluster.
B) A unicast music on hold audio source must be configured.
C) Cisco RIS data collector service must be running on the same server as the Cisco CallManager service.
D) The maximum number of callers allowed in queue must be 10.
E) The phone button template must have the Queue Status Softkey configured.