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: 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
[EX A]: H

[EX Q]: Fact1: having food has a positive impact on an organism 's health, Fact2: For the food of bread is daily food., Question: having bread daily has a positive impact on some organism 's what (A) shelter (B) environment (C) growth (D) survive (E) nutrients (F) health (G) humans (H) habitat
[EX A]: F

[EX Q]: Fact1: thick fur can be used for keeping warm, Fact2: Snow leopards coats have thick, dense fur., Question: what can be used for keeping warm? (A) four limbs (B) an electric stove (C) tusks (D) snow leopard coats (E) animal claws (F) beaver tails (G) evaporation (H) electricity
[EX A]:
D