Match List I with List II with respect to the human eye.
| List I | List II |
|---|---|
| A. Fovea | I. Visible coloured portion of the eye that regulates the diameter of the pupil |
| B. Iris | II. External layer of the eye formed of dense connective tissue |
| C. Blind spot | III. Point of greatest visual acuity or resolution |
| D. Sclera | IV. Point where the optic nerve leaves the eyeball and photoreceptor cells are absent |
Choose the correct answer from the options given below: