How can you completely tear down a specific VPN tunnel in an intranet IKE VPN deployment?

A.
Run the command vpn tu on the Security Gateway, and choose the option "Delete all IPSec+IKE SAs for ALL peers and users".

B.
Run the command vpn tu on the SmartCenter Server, and choose the option "Delete all IPSec+IKE SAs for ALL peers and users".

C.
Run the command vpn tu on the Security Gateway, and choose the option "Delete all IPSec+IKE SAs for a given peer (GW)".

D.
Run the command vpn tu on the Security Gateway, and choose the option "Delete all IPSec SAs for a given user (Client)".

E.
Run the command vpn tu on the Security Gateway, and choose the option "Delete all IPSec SAs for ALL peers and users".