The given figure shows some characteristic features marked as chordates. Identify the correct labelling A, B, C and D.
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- AA-Notochord; B-Post-anal part; C-Gill slits; D-Nerve cord
- BA-Nerve cord; B-Notochord; C-Post-anal part; D-Gill slits
- CA-Notochord; B-Nerve cord; C-Gill slits; D-Post-anal part
- DA-Gill slits; B-Post-anal part; C-Nerve cord; D-Notochord
✓ Correct answer: B
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