Which of these is correct regarding the functionality of DVTI tunnels?

A.
DVTI tunnels are created dynamically from a preconfigured template as tunnels are established
to the hub.

B.
The hub router needs a static DVT1 tunnel to each spoke router in order to establish remote
communications from spoke to spoke.

C.
Spoke routers require a virtual template to clone the configuration on which the DVTI tunnel is
established.

D.
DVTI tunnels appear on the hub as tunnel interfaces.

Explanation:
http://www.cisco.com/en/US/docs/ios/12_3t/12_3t14/feature/guide/gtIPSctm.pdf