Visual sensations from images focused on the side of the retina are blurred because
A. there are no rods in this region.
B. there are more cones than rods in this region.
C. there are more rods than cones in this region.
D. the optic disc is located on the side of the retina.
E. none of the above.
Answer: C. there are more rods than cones in this region.
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