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: a battery converts chemical energy into electrical energy, Fact2: Electrical energy can be converted into kinetic energy and heat energy by an electric motor., Question: What can convert chemical energy into kinetic energy (A) a magnet (B) a vacuum (C) a windmill (D) a battery (E) arteries (F) barnacles (G) animals (H) engines
Example Output: D

Example Input: Fact1: when the seasons change from the summer to the fall , the amount of daylight will decrease, Fact2: Daylight, sunlight, is necessary to it., Question: When the seasons change from the summer to the fall, the amount of what will decrease? (A) air (B) matter (C) Energy. (D) Solar energy (E) Light (F) sunlight (G) energy (H) planets
Example Output: F

Example Input: Fact1: Vertebrate chordates have a backbone., Fact2: Birds are a class of the chordates or vertebrate phylum., Question: What animals have a backbone? (A) snails (B) mammals (C) Birds (D) humans (E) camels (F) invertebrates (G) bats (H) Snakes
Example Output:
C