Which router is an ideal platform for customers that want the widest variety of network interfaces and services, including Virtual Private Network (VPN), intrusion detection, and IP communications?

A.
Cisco 800 Series Integrated Services Routers

B.
Cisco 1800 Series Integrated Services Routers

C.
Cisco 2800 Series Integrated Services Routers

D.
Cisco 3800 Series Integrated Services Routers