Refer to the exhibit. Where would a Cisco Unity Express Network Module physically reside? ()<br /> <img src="https://nimg.ppkao.com/2018-08/tianmin/201808011048075306.jpg?sign=b4b81115a8f03bd49a41464617c3a752&t=62d520af" />
A、PC at headquarters
B、PC at the remote office
C、voice-enabled router at headquarters
D、Cisco Unified CallManager publisher at headquarters
E、Cisco Unified CallManager subscriber at headquarters
F、Cisco Unified CallManager Express router at the remote office