What types of wireless systems are illustrated?

A.
An ERP IEEE 802.11 system using channel 6 and Bluetooth v1.2 discovery

B.
A Bluetooth v2.0 file transfer and a 40 MHz HT AP on channels 11, 7 (primary, secondary)

C.
A 2.4 GHz cordless phone on channel 14 and a wireless RFID reader

D.
An 802.11 HR/DSSS system using channel 2 and a digital FHSS phone