suppose host a sends three TCP segments back to back to host b over a TCP connection. The first segment has sequence number $65,$ the second has sequence number $110,$ the third has $120.$ a$)$ How much data is in the first and second segment $?$ Show all yout calculations. b$)$ Assume that there are fifteen bytes of data in third segment. Suppose the three segments sent by A arrive in order B$.$ The first acknowledgement is lost and the second acknowledgement arrives on time. Draw a timing diagram, showing these segments and all other segments anc acknowledgements sent. Show all your calculations.