Which can be done to the existing NFSv3 volumes to enable this feature?

An administrator has upgraded to vSphere 6.5 and also wants to use Kerberos authentication for NFS.

Which can be done to the existing NFSv3 volumes to enable this feature?
A . Perform a storage rescan on VMFS volumes.
B . Unmount the NFSv3 datastore, and then mount as NFSv4.1 datastore.
C . Nothing. All NFSv3 mounted datastores are upgraded automatically during vSphere upgrades.
D . Perform a scan of new storage devices.

Answer: B

Explanation:

vSphere does not support automatic datastore conversions from NFS version 3 to NFS 4.1. If you want to upgrade your NFS 3 datastore, the following options are available: