Which three options correctly describe the role of a subsequent node in a Cisco Unified CallManager 5.0 cluster? (Choose three.)

A.
replicates the database to other Cisco Unified CallManager servers

B.
maintains read-only copies of the configuration database

C.
processes IP telephony calls

D.
collects CDRs

E.
can have only one in a Cisco Unified CallManager cluster

F.
maintains writeable copy of the configuration database