Which of the following IEEE 802.11 Wi-Fi standards use the 2.4 GHz band? (Choose all that apply)

(A) 802.11
(B) 802.11b
(C) 802.11g
(D) 802.11a
(E) 802.11n
(F) 802.11ac
(G) 802.11ax

A, B, C, E and G are the correct answers.

IEEE Standard	2.4 GHz	5 GHz	Max Data Rate
802.11	Yes	No	2 Mbps
802.11b	Yes	No	11 Mbps
802.11g	Yes	No	54 Mbps
802.11a	No	Yes	54 Mbps
802.11n	Yes	Yes	600 Mbps
802.11ac	No	Yes	6.93 Gbps
802.11ax	Yes	Yes	4x higher than 802.11ac