An administrator has recently upgraded from vSphere 6.0 to 6.5, and can no longer see the software iSCSI
named vmhba33.
Which could be the reason for this?

A.
The upgrade has changed the vmhba name.

B.
vSphere 6.5 automates iSCSI configurations.

C.
vSphere 6.5 no longer supports software iSCSI.

D.
The upgrade has deleted the vmhba.

Explanation:
In vSphere 6.5, the name assigned to the iSCSI software adapter is different from the earlier releases. After you
upgrade to the vSphere 6.5 release, the name of the existing software iSCSI adapter, vmhbaXX, changes.
https://docs.vmware.com/en/VMware-vSphere/6.5/rn/vsphere-esxi-vcenter-server-65-releasenotes.html#storageissues