Which of the Following Is False About Staff Costs for a Network

Which of the following is false about staff costs for a network?

A) The most expensive part of the network today is the staff who design, operate, and maintain it
B) The emphasis is on network designs that reduce staff time needed to operate them
C) Network staff are often required to learn to operate a variety of devices
D) Network staff are often required to maintain a variety of devices
E) When a variety of devices are used in a network, it takes less time to perform network management activities