Which guidelines should an architect use to determine how many AirWave servers to recommend?

Which guidelines should an architect use to determine how many AirWave servers to recommend?
A . One server should be deployed on every subnet with an infrastructure device.
B . One server is recommended for the base features and one server each for add-on features such as Clarity.
C . One server should be dedicated to the wired infrastructure and one server to the wireless infrastructure.
D . One server should monitor and manage up to about 4,000 infrastructure devices.

Answer: A