29. Five wireless nodes—A, B, C, D, and E—are arranged in a line. Any pair of adjacent nodes are within range
of each other, and nonadjacent nodes do not interfere. All nodes execute the Carrier Sense Multiple Access/
Collision Avoidance (CSMA/CA) protocol with Ready to Send/Clear to Send (RTS/CTS) exchange prior to
transmission. If the link bandwidth is L bits per second for successful transmissions and reliable transmission
is desired, what is the maximum possible total bandwidth attainable for this network, in bits per second?
(A) L (B) 2L (C) 3L (D) 5L (E) 6L
