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: Organisms cluster around hydrothermal vents in the ocean floor., Fact2: To survive, some organisms living near hydrothermal vents have formed close associations., Question: How is survival ensured around hydrothermal vents? (A) heat produced (B) Eating a lot (C) Reproducing quickly (D) biological diversity (E) vegetation (F) Being in a cluster (G) Staying far apart (H) hydrate their cells
Example Output: F

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: Courtship is behavior that is intended to attract a mate., Fact2: Almost all animals display colors to attract a mate or to scare off a predator., Question: For animals, displays of color can be viewed as: (A) spectrum (B) prudishness (C) rainbow (D) courtship (E) positive (F) harm them (G) produce light (H) Movement
Example Output:
D