What are two benefits of DMVPN Phase 3? (Choose two.)

What are two benefits of DMVPN Phase 3? (Choose two.)
A . Administrators can use summarization of routing protocol updates from hub to spokes.
B . It introduces hierarchical DMVPN deployments.
C . It introduces non-hierarchical DMVPN deployments.
D . It supports L2TP over IPSec as one of the VPN protocols.

Answer: A, B