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: an animal usually requires a warm body temperature for survival, Fact2: Squirrels hide and sleep in a secret warm place all winter., Question: What requires hiding and sleeping for survival? (A) bacteria (B) rice (C) amphibians (D) organisms (E) Frogs (F) trees (G) humans (H) animals
Example Output: H

Example Input: Fact1: Ants communicate with chemicals called pheromones., Fact2: Ants use receptors on their antennae to follow recruitment pheromone trails., Question: What do ants use to communicate? (A) nerves (B) heat energy (C) sound (D) binary code (E) light energy (F) Antennae. (G) megaphones (H) hand signals
Example Output: F

Example Input: Fact1: Echinoderms use pheromones to communicate with each other., Fact2: Another group of echinoderms are the echinoids., Question: what do echinoids use to communicate? (A) light (B) Chemical energy (C) Decibels (D) pheremones (E) writing (F) Energy (G) heat produced (H) language
Example Output:
D