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: Evolution occurs in response to a change in the environment., Fact2: Animals react instinctively to changes in their environment., Question: What occurs in animals as they respond to changes in their habitat? (A) starvation (B) evolution (C) arousal (D) relocation (E) resistance (F) dependency (G) Leptospirosis (H) Movement
Example Output: B

Example Input: Fact1: All chemical reactions require activation energy to get started., Fact2: Chemical changes are a result of chemical reactions., Question: What is required before a chemical change? (A) kinetic energy (B) energy usage (C) activation push (D) activation energy (E) activation switch (F) activation power (G) Burning fuel and air (H) Evaporation
Example Output: D

Example Input: Fact1: skin is used for breathing air by frogs, Fact2: Every frog starts as a tadpole., Question: What do tadpoles use to breathe? (A) Water (B) Gases (C) oxygen (D) hearts (E) air (F) fur (G) skin (H) lungs
Example Output:
G