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: the mass of a planet causes the pull of gravity on that planet, Fact2: Well, weight is the force on a object caused by gravity trying to pull the object down., Question: The mass of a planet causes the what? (A) harmful substances (B) global warming (C) weight of objects (D) It gets heated up (E) heat energy (F) to move people (G) kinetic energy (H) flow of electrons

Output: C


Input: Consider Input: Fact1: coal is used to produce electricity by burning in coal-fire power stations, Fact2: Swamp vegetation was compressed to form coal., Question: what is used to produce electricity by burning in power stations? (A) dried mud (B) small animals (C) heat energy (D) chemical reaction (E) carbon dioxide (F) swamp air (G) hydrogen and oxygen (H) swamp vegetation


Output: H