Which of the ft flowing is TRUE concerning unnumbered VPN Tunnel Interfaces (VTIs)?

Which of the ft flowing is TRUE concerning unnumbered VPN Tunnel Interfaces (VTIs)?

A.
VTTs cannot be assigned a proxy interface

B.
Local IP addresses are not configured, remote IP addresses are configured

C.
VTIs can only be physical, not loopback

D.
VTIs are only supported on the IPSO Operating System

Explanation: