Match the following columns and select the correct option

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

• A

  (a)-iii; (b)-iv; (c)-i; (d)-ii

• B

  (a)-iv; (b)-ii; (c)-iii; (d)-i

• C

  (a)-i; (b)-iv; (c)-iii; (d)-ii

• D

  (a)-ii; (b)-iii; (c)-iv; (d)-i