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: Organs of excretion make up the excretory system., Fact2: Digestive system Excretory system removes waste and toxic substances from blood., Question: What removes waste and toxic substances from the blood? (A) Special disposal (B) Something coming from a gland (C) aqueous solution (D) Veins and arteries. (E) digestive system organs (F) that material's properties (G) Something that causes allergies (H) microorganisms
Example Output: E

Example Input: Fact1: heating a liquid can be used to identify that liquid 's boiling point, Fact2: Water is also a liquid., Question: What can be identified after heating water? (A) Chemical energy (B) organisms (C) frozen water (D) its freezing point (E) Movement of an air mass (F) its boiling point (G) objects that have mass (H) magma's boiling point
Example Output:
F