Teacher: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").
Teacher: Now, understand the problem? Solve this instance: Fact1: glass cause refraction of light, Fact2: Without light there is no sense of vision., Question: Glass causes a sense of what? (A) sound (B) sunlight (C) smell (D) Dilution (E) distance (F) vision (G) touch (H) heat
Student:
F