The Iris Is the

The iris is the

A) clear membrane just in front of the cornea through which light first passes.
B) colored part of the eye that contains muscles that control the size of the pupil.
C) white outer part of the eye that helps to maintain the shape of the eye and to protect it from injury.
D) light-sensitive surface at the back of the eye that records what we see and converts it to neural impulses for processing in the brain.