If You Move Farther from a Paper with Many Tiny

Multiple Choice

If you move farther from a paper with many tiny dots,the blue dots start to look black,although you can still see the tiny red and green dots.Why?​

A) You have fewer short-wavelength cones than the other types.
B) ​Short-wavelength light excites cones but not rods.
C) ​Short-wavelength light cannot travel as fast or as far.
D) ​The lens cannot focus short-wavelength light as well as the other wavelengths.