Nutrition in Animals

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 villi to absorb digested food.
(a) (i), (ii) and (iv) (b) (ii), (iii) and (iv) (c) (iii) and (iv) (d) (i) and (iv)