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: Wings are part of the exoskeleton and attached to the thorax., Fact2: Insect wings are attached to the dorsal side of their thorax., Question: What side of an insect are wings attached to? (A) white (B) dorsal (C) protected (D) abdomen (E) elytra (F) three (G) strong (H) tail
Example Output: B

Example Input: Fact1: condensing means changing from a gas into a liquid by reducing heat energy, Fact2: Heat energy is measured in calories., Question: Calories measure the energy that leaves a gas to form what? (A) nutrients (B) burning (C) warmth (D) H20 (E) ligt (F) liquid (G) store (H) movement
Example Output: F

Example Input: Fact1: harming an animal species causes that animal 's population to decrease, Fact2: Oil spill sare harmful to animals and the enviroment., Question: What can oil spills cause? (A) A source of kitchen accidents. (B) death and devastation (C) stains (D) animal populations to decrease (E) depress neuronal excitability (F) wind and erosion (G) slipping (H) food
Example Output:
D