Which three statements regarding Virtual Tunnel Interface (VTI) are correct ? (Choose three.)

A.
There are two types of VTIs: Static and Dynamic.

B.
VTIs are supported on Cisco IOS routers and on Cisco ASA security appliances.

C.
VTIs have more encapsulation overhead than GRE tunnels do.

D.
QoS services can be deployed on VTIs.

E.
Traffic that requires protection is routed to VTIs by using static routing or routing protocols