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: unequal heating of Earth 's surface by the Sun causes global wind patterns, Fact2: Wind belts in the Atlantic Ocean include the trade winds and the prevailing westerlies ., Question: What causes the westerlies? (A) flow of electrons (B) Ocean currents (C) Precipitation (D) to move people (E) Drought (F) scattered light (G) Uneven heating by the sun (H) exposure to cold
Example Output: G

Example Input: Fact1: glass cause refraction of light, Fact2: Refraction Refraction is the bending of light rays., Question: Glass causes the _ of light (A) intensification (B) bending (C) photons (D) a wave (E) Pollution (F) blocking (G) heat (H) amplification
Example Output: B

Example Input: Fact1: the emission of sulfur dioxide causes acid rain, Fact2: Sulfur Dioxide and Asthmatics A highly reactive colorless gas smelling like rotten eggs, sulfur dioxide derives primarily from fossil fuel combustion., Question: The emission of what causes acid rain? (A) Material carrying electricity (B) decomposing dead organisms (C) DNA damage and mutations (D) soil loss through hurricanes (E) Something that smells like rotten eggs (F) extreme heat and pressure (G) chemical compound NaCl (H) generating heat by burning
Example Output:
E