A Large Chain of Stores Currently Uses MPLS-Based T1 Lines

A large chain of stores currently uses MPLS-based T1 lines to connect their stores to their data center. An architect must design a new solution to improve availability and reduce costs while keeping these considerations in mind: The company uses multicast to deliver training to the stores. The company uses dynamic routing protocols and has implemented QoS. To simplify deployments, tunnels should be created dynamically on the hub when additional stores open. Which solution should be included in this design?

A) VPLS
B) GET VPN
C) DMVPN
D) IPsec