Hosts P and Q are connected through router R. The MTU of link P–R is 1500 bytes and of R–Q is 820 bytes. A TCP segment of 1400 bytes is sent from P to Q with IP identification 0x1234; the IP header is 20 bytes and DF is not set. Which statements are NOT true?
A. Two fragments are created at R, and the IP datagram carrying the second fragment is 620 bytes.
B. If the second fragment is lost, R resends the fragment with IP identification 0x1234.
C. If the second fragment is lost, P is required to resend the entire TCP segment.
D. The TCP destination port can be determined by analysing the second fragment only.
Choose the correct answer from the options given below:

1. AA and B Only
2. BA and C Only
3. CC and D Only
4. DB and D Only

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