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").

Input: Consider Input: Fact1: Evolution is a change in the characteristics of living things over time., Fact2: Evolution relies on random chance acts to cause mutations., Question: What causes changes in characteristics of living things over time? (A) mutations (B) science (C) parents (D) environment (E) light energy (F) news (G) alleles (H) animals

Output: A


Input: Consider Input: Fact1: Viruses are so small that they can be seen only with an electron microscope., Fact2: Electron microscope is developed in Germany., Question: viruses are so small that they can be seen only with a device developed where? (A) A computer (B) sunlight (C) Light (D) germany (E) retina (F) at home (G) canada (H) taiwan

Output: D


Input: Consider Input: Fact1: habitat destruction causes animals to move to find shelter in another habitat, Fact2: Cows are social animals., Question: what moves to find shelter in another habitat because of habitat destruction? (A) cows (B) Whales (C) humans (D) clouds (E) Birds (F) gravity (G) camels (H) density


Output: A