Match the following and choose the correct option.

	Column I		Column II
(a)	Water vascular system	(i)	Fasciola
(b)	Canal system	(ii)	Spongilla
(c)	Closed blood vascular system	(iii)	Ophiura
(d)	Incomplete digestive system	(iv)	Nereis

	a	b	c	d
1.	ii	iii	iv	i
2.	iii	ii	i	iv
3.	iii	ii	iv	i
4.	iii	iv	ii	i

• A

  1

• B

  2

• C

  3

• D

  4