Problem: A Wireshark trace of TCP traffic between hosts A and B indicated the following segments. Host A sent a segment of 0 bytes data payload to host B with SYN flag set, sequence number 200 and no valid ACK number. Later B sent a segment of 0 bytes data with SYN and ACK flags set, sequence number 100 and ACK number 201. What is the state of the connection in host B before receiving SYN from host A? And after sending SYN-ACK to host A?