A customer is concerned that their wireless network is detecting spurious threats from channels that are not being used by their wireless infrastructure. Which ...

A customer is concerned that their wireless network is detecting spurious threats from channels that are not being used by their wireless infrastructure.
Which two technologies must they deploy? (Choose two.)

A. FlexConnect mode B. monitor mode C. sniffer mode with no submode D. local mode with WIPS submode E. rogue detector mode