Which statement is true regarding line-of-sight (LoS) requirements of Wi-Fi networks?

A.
802.11b/g networks require LoS, but 802.11a networks do not.

B.
802.11a networks require LoS, but 802.11b/g networks do not.

C.
Both 802.11a and 802.11b/g networks require LoS.

D.
Neither 802.11a, nor 802.11b/g networks require LoS.