Which router series achieves this integration?

In an integrated network, access routers must handle both security services and IP communications. Which router series achieves this integration?

A.
Cisco 700 Series ISDN Access Routers

B.
Cisco 3700 Series Multiservice Access Routers

C.
Cisco Integrated Services Routers

D.
Cisco 1700 Series Modular Access Routers