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").

Example Input: Fact1: Tunicates reproduce sexually., Fact2: Bulbs are classifies as tunicate or non-tunicate., Question: How many ways can a bulb reproduce? (A) LEDs (B) Two (C) Many (D) wind (E) well (F) 12 (G) bent (H) tube
Example Output: B

Example Input: Fact1: Many corals secrete an exoskeleton that builds up to become a coral reef., Fact2: Good examples are Bubble coral, Elegance coral, Frogspawn and other Euphyllia corals., Question: What is secreted by organisms like frogspawn to become a reef? (A) exocrine glands (B) food and shelter (C) exoskeleton (D) bones (E) Energy (F) Chemical energy (G) plasma (H) Energy.
Example Output: C

Example Input: Fact1: Thyroid hormones increase the rate of metabolism in cells throughout the body., Fact2: Metabolism is the process of converting food to energy., Question: Thyroid hormones increase the rate of (A) by making heat (B) the rest of the body (C) female sex cells (D) Helps them grow (E) hydration of their cells (F) heat produced (G) converting food to energy (H) aerobic capacity
Example Output:
G