Your Friend Shows You an Old Coin That He Found

Your friend shows you an old coin that he found in his great-grandfather's attic. To examine it, you instinctively bring the coin close to your eye and to the very center of your visual field. Why?

A) Visual acuity is highest in the region with the largest concentration of rods, which is the fovea at the very center of the eye.
B) Visual acuity is highest in the region with the largest concentration of cones, which is the fovea at the very center of the eye.
C) You want to avoid focusing the image on your blind spot.
D) You need to avoid focusing the image on the optic disk.