The Explanation for the "Blind Spot" in Our Visual Field

Multiple Choice

The explanation for the "blind spot" in our visual field is that

A) the lens cannot focus all of the visual field onto the retina.
B) blood vessels collect together and enter the eye at the blind spot.
C) rods are less sensitive to light than are cones.
D) retinal cells die with age and overuse, resulting in blind spots.
E) there are no photoreceptors in the retina where the axons exit the eye.