. Suppose client A initiates an FTP session with server S. At about the same time, client B also initiates an FTP session with server S. Provide possible source and destination port numbers for: (a) the segments sent from A to S? (b) the segments sent from B to S? (c) the segments sent from S to A? (d) the segments sent from S to B? (e) If A and B are different hosts, is it possible that the source port numbers in the segments from A to S are the same as those from B to S? (f) How about if they are the same host?