One Reason That Your Ability to Detect Fine Visual Details

One reason that your ability to detect fine visual details is greatest when scenes are focused on the fovea of your retina is that

A) there are more feature detectors in the fovea than in the peripheral regions of the retina.
B) cones in the fovea are nearer to the optic nerve than those in peripheral regions of the retina.
C) many rods,which are clustered in the fovea,have individual bipolar cells to relay their information to the cortex.
D) many cones,which are clustered in the fovea,have individual bipolar cells to relay their information to the cortex.