How do you verify a VPN Tunnel Interface (VTI) is configured properly?

How do you verify a VPN Tunnel Interface (VTI) is configured properly?

A.
vpn shell display <VTI name> detailed

B.
vpn shell show <VTI name> detailed

C.
vpn shell show interface detailed <VTI name>

D.
vpn shell display interface detailed <VTI name>