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: fat is used to keep animals warm, Fact2: Humans are a new type of animal., Question: what uses fat to keep warm? (A) Lobsters (B) bacon (C) humans (D) pigeons (E) insects (F) omnivores (G) plants (H) bears
[A]: C


[Q]: Fact1: a light bulb is used for seeing in the dark, Fact2: Conventional light bulbs generate light by heating a filament., Question: What is helpful for seeing in the dark? (A) an electron microscope (B) an electron lens (C) microscope (D) closing the blinds (E) blackouts (F) closing your eyes (G) focusing a lens (H) heating a filament
[A]: H


[Q]: Fact1: lakes are formed by precipitation and runoff, Fact2: Lakes are large bodies of inland water., Question: Precipitation and runoff can result in large bodies of what? (A) drizzle (B) erosion (C) rain (D) storm (E) water (F) hail (G) liquid (H) streams
[A]:
E