What is the minimum version of clustered Data ONTAP that supports shelf hot-remove?

A.
8.2.1

B.
7.3.3

C.
8.0.1

D.
8.3

Explanation:
If your system is running Data ONTAP 8.2.1 or later, you can hot-remove
disk shelves–physically remove disk shelves that have had the aggregates removed from
the disk drives–in a clustered Data ONTAP multipath HA configuration with DS14 disk
shelves that is up and serving data.
https://library.netapp.com/ecmdocs/ECMP1367947/html/GUID-2B80FBD2-
007D-4D19-8EB1-9CCEED211001.html