A wireless LAN is being deployed inside the new one room office that is occupied by the park ranger. The office is located at the highest part of the national park. After network testing is complete, the technicians report that the wireless LAN signal is

the elevated location where the wireless LAN was installed

[] the number of wireless devices that are used in the wireless LAN

the cellular phones that are used by the employees

the microwave oven

[] the large number of trees that surround the office