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 are of extreme importance in the insect world., Question: How do some insects communicate? (A) sound (B) sensory neurons (C) Decibels (D) electronic waves (E) progesterone (F) Vibrates (G) pheromones (H) radio waves

Ex Output:
G

Ex Input:
Fact1: shelter is used for protection by animals against weather, Fact2: Many animals use sponges for shelter., Question: What can animals use for protection? (A) hair (B) bushes (C) keratin (D) food (E) shells (F) appendages (G) energy (H) sponges

Ex Output:
H

Ex Input:
Fact1: building housing developments usually requires replacing animal habitats, Fact2: An animal's habitat is where it lives., Question: building housing developments usually requires replacing where an animal what? (A) humans (B) trees (C) lives (D) dogs (E) houses (F) cells (G) biome (H) Frogs.

Ex Output:
C