Match List I with List II.

	List - I  (Cells)		List - II (Secretion)
(A)	Peptic cells	(I)	Mucus
(B)	Goblet cells	(II)	Bile juice
(C)	Oxyntic cells	(III)	Pro enzyme pepsinogen
(D)	Hepatic cells	(IV)	HCL and intrinsic factor for absorption of vitamin ${\mathrm{B}}_{12}$

Choose the correct answer from the options given below.

	(A)	(B)	(C)	(D)
1)	II	IV	I	III
2)	IV	III	II	I
3)	II	I	III	IV
4)	III	I	IV	II

A-III, B-I, C-IV, D-II

A. Peptic (chief) cells secrete the proenzyme pepsinogen, prorennin (in infants) and gastric lipase.

B. Goblet cells secrete mucus, which lubricates the passage of food and protects the lining of gastrointestinal tract from the action of various digestive enzymes. Mucus also forms a first line of defence and prevents the entry of pathogens into the body.

C. Oxyntic (parietal) cells secrete HCL and intrinsic factor required for the absorption of vitamin B₁₂.

D. Hepatic cells secrete bile juice.