In Fusion Compute, what is the correct connection relationship of virtual network interfaces?

In Fusion Compute, what is the correct connection relationship of virtual network interfaces?
A . vNIC (VW) > vPort (OVS) > pNIC (network card) > port (switch)
B . vNIC (VI) > pNIC (network card) > vPort (DVS) > port (switch)
C . vNIC (VI) > pNIC (network card) > port (switch) > vPort (DVS)
D . Port (DVS) > vWIC (VM) > pNIC (network card) > port (switch)

Answer: A