which folder(s)?

To clean the system of all events, you should delete the files in which folder(s)?

A.
$RTDIR/distrib and $RTDIR/events_db

B.
$RTDIR/events_db

C.
$FWDIR/distrib_db and $FWDIR/events

D.
$FWDIR/distrib

Explanation:

Topic 4, Volume D