Which Cisco device do Internet service providers (ISPs) use to connect their customers to integrated services (data, voice, and video) and to the Internet?

Which Cisco device do Internet service providers (ISPs) use to connect their customers to integrated services (data, voice, and video) and to the Internet?

A.
BPX 8600 Series

B.
MGX 8000 Series

C.
Catalyst 6500 Series

D.
AS5400 universal gateways