Which three tasks are performed in the system monitoring service component of the operate phase? (Choose three.)

A.
define an operations plan supporting the configuration management database

B.
track events and report on system availability, resource capacity, and performance

C.
analyze process exceptions

D.
notify interested parties of problems identified, and escalate per-customer requirements

E.
monitor system to identify occurrences of service-level metrics dropping

F.
verify configuration management database