Which three options are differences between vPC and VSS from an operational point of view?

Which three options are differences between vPC and VSS from an operational point of view?
(Choose three.)

A.
With vPC, the two switches operate as a single device.

B.
With vPC, the two switches operate as individual devices.

C.
With VSS, the two switches operate as individual devices.

D.
With VSS, the two switches operate as a single device.

E.
VSS eliminates the need to implement a FHRP.

F.
vPC eliminates the need to implement a FHRP.

G.
With vPC, the peer keep-alive link also carries user traffic.

H.
With VSS, heartbeat links also carries user traffic.