What is an advantage of an 802.11b network over a Very Fast Infrared (VFIR) network?

A.
802.11b supports higher data rates than VFIR.

B.
Within a room, 802.11b signals can maneuver around obstacles, but VFIR signals cannot.

C.
802.11b signals can penetrate walls within a facility, but VFIR signals cannot.

D.
802.11b can be used for file transfers between laptop computers, but VFIR cannot.