Which is the best definition of the VPN support available in the Cisco 7200 Series routers?

A.
It provides high port density and an extensive range of LAN and WAN media.

B.
It supports up to six port adapters in a fully modular 3-RU form factor.

C.
It allows for integration of data, voice, and video in a single device.

D.
It enables an integrated solution for routing and security including QoS, multicast, and multiprotocol traffic.