Q: In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
Fact1: Light enters the eye through an opening called the pupil., Fact2: Light rays are focussed on the retina., Question: Where do rays enter the eye? (A) glass (B) Summer (C) pupil (D) lenses (E) harmful (F) the sun (G) photons (H) skin
A:
C