In a single channel architecture (SCA) WLAN system, 802.11n (High Throughput) APs should not share
an ESSID with 802.11g (ERP-OFDM) APs because _________.

A.
Client stations could lose services as they roam between APs with the same BSSID

B.
The added range of 802.11n APs would cause co-channel interference

C.
The additional beacon material would confuse 802.11b/g client stations

D.
802.11n APs use 40 MHz channels, while 802.11g APs use 20 MHz channels