Read the following statements with reference to the villi of small intestine.
(i) They have very thin walls.
(ii) They have a network of thin and small blood vessels close to the surface.
(iii) They have small pores through which food can easily pass.
(iv) They are finger-like projections.
Identify those statements which enable the villil to absorb digested food.

Options

A. (i) and (ii) and (iv)
B. (ii), (iii) and (iv)
C. (iii) and (iv)
D. (i) and (iv)