Suppose Client A initiates a T

Suppose Client A initiates a Telnet session with Server S. At about the same time. Client B also initiates a Telnet 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 number in the segments from A to S is the same as that from B to S?
f. How about if they are the same host?