Suppose that the go-back-n protocol with m = 3 and the sending window of size 7 is used to send packets. let s = 31, s. = 35, and r = 33 a. what are the sequence numbers of data packets in transit? [2 marks] b. what are the acknowledgement numbers of ack packets in transmit? [2 marks c. if the sender's process sends two more data packets to the sender's transport layer and one ack packet is received from the receiver's transport layer, what are the updated values for sand s,?