How Could a Diet Deficient in Vitamin a Affect Vision

How could a diet deficient in vitamin A affect vision?

A) Deficiency in vitamin A reduces the amount of aqueous humor available to circulate to the tissues of the anterior chamber.
B) Deficiency in vitamin A reduces the amount of retinal that the body could produce,thereby interfering with night vision.
C) Deficiency in vitamin A reduces the amount of opsin that can be produced,reducing the wavelengths of light that can be absorbed.
D) Deficiency in vitamin A reduces the amount of red cones,causing red-green color blindness.
E) Deficiency in vitamin A blocks the production of all cone pigments,causing total color blindness.