How fast can Cisco Unified Communications Manager generate CDR and CMR files?

A.
one CDR file and one CMR file every second for up to 1 minute

B.
one CDR file and one CMR file every minute for up to 1 hour

C.
ten CDR files and ten CMR files every hour for up to 1 day

D.
ten CDR files and ten CMR files every day for up to 1 week