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").

Fact1: Wings are part of the exoskeleton and attached to the thorax., Fact2: Insect wings are attached to the dorsal side of their thorax., Question: What side of an insect are wings attached to? (A) white (B) dorsal (C) protected (D) abdomen (E) elytra (F) three (G) strong (H) tail
B

Fact1: Hydrogen bonds cause water to expand when it freezes., Fact2: Deuterium, or heavy hydrogen, is an isotope of hydrogen, or a hydrogen atom with a neutron added., Question: The bonds of that which when heavy is Deuterium cause what to expand when it freezes? (A) matter (B) rings (C) CO 2 (D) liquids (E) gas (F) solutes (G) cations (H) water
H

Fact1: some animals' fur grows thicker for staying warm in the winter, Fact2: Winter is snow, winter is Christmas., Question: Why do some animals grow thicker fur around Christmas in the Northern hemisphere? (A) overheat (B) protect them (C) stay warm (D) climate (E) adding heat (F) warm other animals (G) stay cool (H) sun's heat

C