Question

In TCP's three-way handshake, the client sends SYN with ISN=1000. The server replies with SYN-ACK carrying ISN=5000 and ACK=1001. What sequence and acknowledgment numbers will the client's final ACK segment carry?

A Seq=1001, Ack=5000
B Seq=1002, Ack=5001
C Seq=1001, Ack=5001
D Seq=5001, Ack=1001
E Seq=1000, Ack=5000
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