. Suppose that Bob sends 172,800 bits to Alice over a 5.76 Kbps link (note, 1 Kbps = 10 bps) that uses circuit switching. Suppose that circuit switching on the link is implemented using TDM, that a frame is 1 sec, and that a frame consists of 12 slots. Bob is assigned one slot in every frame. How many minutes does it take Bob to transmit all bits to Alice? (6 points)