5. Suppose two hosts, A and B are separated by 25,000Km and are connected by a direct link of R=5 Mbps. Suppose the propagation speed over the link is 2.5106m/s. (a) How long does it take to send a file of 800,000 bits from host A to host B, assume it is sent continuously. (b) Suppose now the file is broken up into 20 packets with each packet containing 40,000 bits. Suppose that each packet is acknowledged by the receiver and the transmission time of an acknowledgment packet is negligible. Assume the sender cannot send a packet until the preceding one is acknowledged. How long does it take to send the file? (c) Compare the results from (a) and (b)