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Which of the following is false regarding flags in TCP header?

$(A)$ PSH flag is used to terminate the connection.

$(B)$ If SYN $= 1$ and ACK $= 1,$ then it is acknowledgement.

$(C)$ URG flag is used acknowledgment immediately.

$(D)$ None of the above.

Mine was $A$ but given is $D$ how?
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To terminate connection in tcp FIN flag is used. 

More to read http://packetlife.net/blog/2011/mar/2/tcp-flags-psh-and-urg/

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