In the WLAN outdoor coverage scenario, in order to ensure the balance of the uplink and downlink, which of the following is the most effective way?

In the WLAN outdoor coverage scenario, in order to ensure the balance of the uplink and downlink, which of the following is the most effective way?
A . Use a larger gain antenna
B . Reduce AP reflected power
C . Use an antenna with a smaller gain
D . Increase AP transmit power

Answer: B