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: oil is formed by layers of sediment pushing down on decomposing algae, Fact2: When the algae dies it is decomposed by bacteria., Question: Oil is formed by layers of sediment pushing down on what? (A) bacteria (B) nutrients (C) amoebae (D) tunicates (E) oysters (F) coral reefs (G) mussels (H) Bodily water
[A]: A

[Q]: Fact1: an aquatic animal requires great amounts of water to survive, Fact2: Beavers are primarily aquatic animals., Question: what requires great amounts of water to survive (A) sunlight (B) beavers (C) octopus (D) mussels (E) trout (F) carbon (G) oxygen (H) amphibians
[A]: B

[Q]: Fact1: water vapor cooling causes that water vapor to condense, Fact2: Heat energy is released as the water vapor in the air condenses., Question: Water vapor cooling releases what? (A) heat energy (B) solar energy (C) gas (D) evaporation (E) loose soil (F) scattered light (G) acid (H) Greenhouse gases
[A]:
A