Select the answer that accurately describes an 802.11 Clause 20 High Throughput (HT) operational
mode.

A.
Mode 0: Used if one or more non-HT stations are associated in the BSS.Called "HT mixed mode".

B.
Mode 1: Used if there are non-HT stations or APs using the primary or secondary channels.
Called "HT non-member protection mode".

C.
Mode 2: Used if all stations in the BSS are 20/40 MHz HTcapable, or if the BSS is 20/40 MHz capable,
or if all stations in the BSS are 20 MHz HT stations in a 20 MHz BSS.

D.
Mode 3: Used if only HT stations are associated in the BSS and at least one 20 MHz HT station is
associated.