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 Q]: Fact1: Pneumonia may be caused by an infection or injury of the lungs., Fact2: Mammals breathe air with lungs., Question: What may be caused by an infection or injury of the organs used to breathe air? (A) Toxicity (B) smoking (C) fertilization (D) pneumonia (E) a broken leg (F) oxygenation (G) Dehydration (H) the skin
[EX A]: D

[EX Q]: Fact1: Carbon may be stored in sedimentary rock for millions of years., Fact2: Limestone is a type of sedimentary rock., Question: What element can be stored in limestone for millions of years? (A) oxygen (B) Energy (C) matter (D) carbon (E) sodium (F) helium (G) rock salt (H) heat
[EX A]: D

[EX Q]: Fact1: folding an object causes that object to change shape, Fact2: By default all objects are assumed to be solid., Question: what can you fold to cause it to change shape? (A) gas (B) a prism (C) liquid (D) biceps (E) solid (F) Enzymes (G) particles (H) fibers
[EX A]:
E