Match the following columns and select the correct option.
Column I Column II
(a) 6- 15 pairs of gill slits (i) Trygon
(b) Heterccercal caudal fin (ii) Cyclostones
(c) Air Bladder (iii) Chondrichthyes
(d) Poison sting (iv) Osteichthyes
Option: 1 (a) (b) (c) (d)
(ii) (iii) (iv) (iv)
Option: 2 (a) (b) (c) (d)
(iii) (iv) (i) (ii)
Option: 3 (a) (b) (c) (d)
(iv) (ii) (iii) (I)
Option: 4 (a) (b) (c) (d)
(i) (iv) (iii) (ii)
6-15 gill slits are found in Cyclostomata which is given only in option 1.