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 is essential to vision., Question: What requires the pupil? (A) olfaction (B) Summer (C) chemicals (D) hearing (E) bushes (F) touch (G) vision (H) Energy
A:
G