$($b$).$ XT$02$ Host C sent two TCP segments back$-$to$-$back to Host A over a TCP connection. The first segment has a sequence number $98$ ; the second has a sequence number $123.($i$)$ State how much data is in the first segment $($including the unit$).(15/100)($ii$)$ If the first segment is lost but the second segment arrives at A$.$ Predict the acknowledgment number in the ACK packet that Host A sends to Host C$.(10/100)$