which folder(s)?

To back up all events stored in the SmartEvent Server, you should back up the contents of which
folder(s)?

A.
$RTDIR/distrib

B.
$RTDIR/distrib_db and $FWDIR/events

C.
$RTDIR/distrib and $RTDIR/events_db

D.
$RTDIR/events_db

Explanation: