Why can you not see objects in a dim lit room when you come from a brightly lit room?

A

The iris dilates the eye lens to allow less light to enter the eye.

B

The iris contracts the pupil to allow less light to enter the eye.

C

The vitreous humour dilates the pupil to allow less light to enter the eye.

D

The cornea contracts the pupil to allow less light to enter the eye.