11. Which is a correct description of some sensory receptors in the eye?
a. Rods are concentrated in the fovea of the retina and function well in dim light.
b. Rods are concentrated near the periphery of the retina and function to detect colors.
c. Cones are concentrated in the fovea of the retina and function to detect colors.
d. Cones are concentrated near the periphery of the retina and function well in dim light