which of the following files?

When carrying out a backup operation on R71, you will have to backup which of the following files?

A.
$FWDIR/conf/objects_5_0.C

B.
$FWDIR/conf/rule.fws

C.
$FWDIR/database/fwauth.NDB*

D.
$FWDIR/conf/rulebases_5_0.fws

E.
$FWDIR/database/control.map