What are the categories that can be validated by the VxRail NVT?

What are the categories that can be validated by the VxRail NVT?
A . Network Services, TOR Switches and Upstream Switches
B . TOR Switches and Upstream Switches only
C . VxRail Appliance, Network Services, and ToR Switches
D . VxRail Appliance, ToR Switches, and Upstream Switches

Answer: A