Match the items given in column I with those in column II and select the correct option.

	Column I		Column II
(a)	Urea moves out of	(i)	Ascending limb of vasa recta
(b)	NaCl moves into	(ii)	Descending limb of vasa recta
(c)	Urea moves into	(iii)	Collecting duct
(d)	NaCl moves out of	(iv)	Ascending limb of Henle's loop

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