In the simple TCP client$/$server socket programming experiment, the client sends a word 'netfun' $($total $7$ bytes, including carriage return$),$ and the server echoes with 'NETFUN' $(7$bytes$),$ as shown in the figure below. Assume the client has a SendBase of $100,$ and the server has a SendBase of $30.$

Please calculate the sequence numbers A$-$F for the above figure and fill in the spaces below:

A$.$ Seq$-$A:

B$.$ ACK$-$B:

C$.$ Seq$-$C:

D$.$ ACK$-$D:

E$.$ Seq$-$E:

F$.$ ACK$-$F: