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: Chromosomes are coiled structures made of DNA and proteins., Fact2: DNA is deoxyribonucleic acid., Question: chromosomes are coiled structures made of proteins and what? (A) solid, liquid, gas (B) density (C) Something that causes allergies (D) deoxyribonucleic acid (E) It helps them survive (F) inheritance (G) blood cells (H) allow growth
Example Output: D

Example Input: Fact1: keeping food cold is used for keeping food fresh, Fact2: A refrigerator that keeps food cold., Question: What is a refrigerator used for? (A) Electrical energy (B) A place to hang magnets (C) Cooling your home (D) staying warm (E) A doorstop (F) electricity (G) energy usage (H) Keeping food fresh
Example Output: H

Example Input: Fact1: cross-pollination increases genetic diversity, Fact2: Biodiversity is basically genetic diversity., Question: What increases biodiversity? (A) Reproduction (B) cross-pollination (C) By coral exoskeletons (D) gene flow (E) Quality of life (F) self-pollination (G) asexual reproduction (H) extinction
Example Output:
B