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").

Ex 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

Ex Output:
F


Ex Input:
Fact1: Biomass is the total mass of organisms at a trophic level., Fact2: Producers make up the first trophic level, primary consumers the second, and so on., Question: What is the total mass of primary consumers (A) Plants (B) animals (C) food (D) Mountains (E) Biomass (F) decreases (G) all matter (H) Weight

Ex Output:
E


Ex Input:
Fact1: Consumers take in food by eating producers or other living things., Fact2: Bats are natural insect consumers., Question: What takes in food by eating producers or other living things? (A) people (B) fungi (C) Man (D) sheep (E) cats (F) humans (G) bats (H) bears

Ex Output:

G