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 Input:
Fact1: Organisms use lipids to store energy., Fact2: Triglycerides are a storage form of energy., Question: In what form do organisms use lipids? (A) Triglycerides (B) glucose (C) layers of fat (D) adding heat (E) reducing acid rain (F) hydrocarbons (G) recycling (H) By wind and rain

Ex Output:
A

Ex Input:
Fact1: a graduated cylinder is used to measure volume of a liquid, Fact2: Volume Volume is a measure of how much space a space figure takes up., Question: What is used to measure how much space a liquid takes up? (A) aerobic capacity (B) a graduated student (C) Water expanding (D) a graduated cylinder (E) body water (F) a scale (G) a granulated cylinder (H) Light passing through water

Ex Output:
D

Ex Input:
Fact1: Organisms cluster around hydrothermal vents in the ocean floor., Fact2: Hydrothermal vents are powered by the heat of submarine volcanoes., Question: What clusters around the heat of submarine volcanoes? (A) ferns (B) organisms (C) vegetation (D) humans (E) emissions (F) Energy (G) insects (H) the sun

Ex Output:
B