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: Heterotrophs are living things that cannot make their own food., Fact2: All animals are heterotrophs., Question: what are living things that cannot make their own food? (A) hydrogen (B) clouds (C) animals (D) humans (E) bacteria (F) bushes (G) fungi (H) plants
[A]: C


[Q]: Fact1: killing microorganisms in food can be used to extend the shelf life of that food, Fact2: Cooking kills the microorganisms., Question: What can extend the shelf life of food? (A) cooking it (B) Enzymes (C) evaporation (D) rays or beams (E) running it under water (F) Proteins (G) seasoning it (H) putting it on a counter
[A]: A


[Q]: Fact1: Most people can survive only a few days without water., Fact2: Man's survival depends on water., Question: what do men need to live? (A) Air (B) ocean (C) water (D) bears (E) oxygen (F) sun (G) breathe (H) food
[A]:
C