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 Q]: 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 A]: G

[EX Q]: Fact1: if soil is permeable then water easily flows through that soil, Fact2: If a soil has high permeability, water flows through the soil more freely and may cause chemicals to leach., Question: What may cause chemicals to leach in soil? (A) soil is permeable (B) Pesticides (C) soil is hard (D) soil is dense (E) soil is eroded (F) Organic compounds (G) fossil fuels (H) harmful substances
[EX A]: A

[EX Q]: Fact1: insulated material can be used for keeping warm, Fact2: Guard hairs protect the fur, while the fur insulates the mammal., Question: What can be used to keep warm? (A) hair (B) fighting bears (C) lightning (D) hemp (E) coat (F) cooked food (G) wood (H) fur
[EX A]:
H