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").

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

A: H
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Q: Fact1: an earthquake causes the ground to shake, Fact2: Seismic waves are produced by earthquakes., Question: Seismic waves cause what to shake? (A) earth (B) body water (C) wind (D) tremors (E) sunlight (F) the ground (G) Sediment (H) rocks

A: F
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Q: Fact1: water causes refraction of light, Fact2: Water is a compound of hydrogen and oxygen., Question: What causes a refraction of light? (A) compound of hydrogen oxygen (B) focusing a lens (C) that material's properties (D) photosynthetic pigments? (E) oxidation reaction (F) a hemisphere is tilted away from the sun (G) sunlight beams (H) solid, liquid, gas

A:
A
****