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37. Match the following columns and select the correct option.

	Column I		Column I
(a)	6 - 15 pairs of gill slits	(i)	Trygon
(b)	Heterocercal caudal fin	(ii)	Cyclostomes
(c)	Air Bladder	(iii)	Chondrichthyes
(d)	Poison sting	(iv)	Osteichthyes

Select the correct option:

$(a) \to (ii), (b) \to (iii), (c) \to (iv), (d) \to (i)$
$(a) \to (iii), (b) \to (iv), (c) \to (i), (d) \to (ii)$
$(a) \to (iii), (b) \to (iv), (c) \to (i), (d) \to (ii)$
$(a) \to (i), (b) \to (iv), (c) \to (iii), (d) \to (ii)$

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