When does Fractional Reservation reserve space from the volume?

A.
Volume Creation

B.
LUN Creation

C.
LUN SnapMirror

D.
Volume Snapshot

Explanation:

Fractional reserve is a volume option that determines how much space Data ONTAP will
reserve for Snapshot overwrite data for LUNs and space-reserved files to be used after all
other space in the volume is used.. The default value is 100%, however, with the introduction
of the autodelete functionality, NetApp generally recommends setting fractional_reserve = 0
and using the autodelete functionality. Data ONTAP removes or reserves this space from the
volume as soon as the first Snapshot copy is created