How does a Call Detail Record Agent running on a Cisco Unified Communication Manager node determine if a CDR flat file i

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How does a Call Detail Record Agent running on a Cisco Unified Communication Manager node determine if a CDR flat file is ready to be transferred to a designated CDR Repository node?

A. The CDR Agent knows transfer eligibility from the name of a CDR flat file name.
B. The CDR Agent transfer all CDR flat files at a specific, configurable time of day.
C. The CDR Agent transfer all new CDR flat files generated after the last successful transfer.
D. The CDR Agent transfer all new CDR flat files upon receiving notifications from the CDR Repository node on the name of last file successfully received.
E. The CDR Agent transfers any CDR flat file before its deletion.