Which two of these statements describe important aspects of performing a wireless site survey？ （Choose two.）  （）

A、 An 802.11 g access point with a variety of antennas can be used in all standard site surveys.

B、 Site surveys can be performed manually or through assisted site survey.

C、 Channel power during testing starts at the default minimum and gradually increases to the maximum.

D、 Overlapping access points can create performance problems.

E、 Surveys should be done after hours in an office building or during reduced inventory levels in warehouses.