Good vision depends on adequate intake of carotene-rich food.
Select the best option form the following statements:
(i) Vitamin A derivatives are formed from carotene.
(ii) The photopigments are embedded in the membrane discs of the inner segment.
(iii) Retinal is a derivative of vitamin a.
(iv) Retial is a light-absorbing part of all the visual photopigments.

Options

A. a and b
B. a,c and d
C. a and c
D. b,c and b.

Answer

B