Match the following columns and array ll Column-I & Column-II (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 array select the correct option.

1. A. a-iii, b-iv, c-i, d-ii
2. B. a-iv, b-ii, c-iii, d-i
3. C. a-i, b-iv, c-iii, d-ii
4. D. a-ii, b-iii, c-iv, d-i

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