when does archiving initially occur?

Once data archiving has been enabled on the Cisco Security MARS appliance when does archiving initially occur?

A.
Data is archived via NFS when a new incident occurs.

B.
Whenever a new event is received, data will be archived via NFS.

C.
Data is archived off the Cisco Security MARS via NFS when the Cisco Security MARS database fills up.

D.
Data is archived nightly as a scheduled operation.

E.
Data is archived when a configuration change occurs on the Cisco Security MARS.