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").

[EX Q]: Fact1: seeing requires light, Fact2: Sight is the mere ability to see, and the eye's responses to light shining into it., Question: What do eyes require? (A) a form of oxygen (B) Light shining into it (C) Exposure to oxygen and water (D) A dark environment (E) Contact lenses (F) melanin amount (G) tissue made of chondrocytes (H) Glasses
[EX A]: B

[EX Q]: Fact1: Fertilization occurs when a sperm and an egg fuse., Fact2: Pregnancy begins with a fertilized egg., Question: what begins when a sperm and an egg fuse? (A) Leptospirosis (B) cellular regeneration (C) h2o (D) seeds (E) death (F) pollen (G) pregnancy (H) competition
[EX A]: G

[EX Q]: Fact1: an automobile engine transforms chemical energy into mechanical energy, Fact2: Gasoline is a mix of hundreds of chemicals., Question: What do cars use for energy? (A) engines (B) Energy. (C) heat (D) Gasoline (E) energy (F) fossil fuels (G) coal (H) photons
[EX A]:
D