Which of the Following Statements About M and L Cones

Multiple Choice

Which of the following statements about M and L cones is FALSE?

A) M and L cones comprise over 90% of the cones in most people's retinas.
B) M and L cones are distributed in a very regular pattern on the retina.
C) The proportion of M and L cones varies across individuals with normal color vision.
D) The opsin for M and L cones is encoded on the X chromosome.