The results of a recently completed site survey indicate a significant, undesired RSSI in the parking lot and other exterior areas near the main building. The wireless technician would like to mitigate access to the wireless network in exterior access areas. The current access point settings are listed in the following table:

Which of the following is the BEST step for the technician to take to resolve the issue?

A. Reconfigure AP2 and AP3 for non-overlapping channels.
B. Implement directional antennas on AP1 and AP2.
C. Raise the power settings on AP2 and AP3.
D. Change the SSID on AP1 and AP2.