From the perspective of the entire network, which of the following solutions will not be used in scenarios where there is in sufficient wireless equipment room space?

From the perspective of the entire network, which of the following solutions will not be used in scenarios where there is in sufficient wireless equipment room space?
A . BBU centralized placement plan
B. Adopt a fronthaul program
C. Install the BBU through the wall-mounted IMB05
D. 4G/5G co-BBU solution

Answer: B