Match the items given in column I with those in column II and choose the correct option :

	Column I		Column II
(a)	Rennin	(i)	Vitamin ${\mathrm{B}}_{12}$
(b)	Enterokinase	(ii)	Facilitated transport
(c)	Oxyntic cells	(iii)	Milk proteins
(d)	Fructose	(iv)	Trypsinogen

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

Rennin – Milk proteins (Rennin is the milk coagulating enzyme in the gastric juice of infants)

Enterokinase – Trypsinogen (Enterokinase activates trypsinogen)

Oxyntic cells – Vitamin ${\mathrm{B}}_{12}$ (oxyntic cells secrete Castle’s intrinsic factor required from the absorption of vitamin ${\mathrm{B}}_{12}$ from the small intestine).

Fructose – Facilitated transported (fructose is absorbed from the lumen of the small intestine into the intestinal epithelial cells  and from there into the blood by facilitated transport)