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: 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
[A]: D

[Q]: Fact1: if an object is made of a material then that object has the properties of that material, Fact2: An asteroid is a rock-like object with an irregular shape., Question: If an asteroid is made of a material then what does the asteroid have? (A) electromagnetic energy (B) that material's properties (C) that material's soul (D) that material's size (E) nothing special (F) Something to move (G) hard outer covering (H) visible energy
[A]: B

[Q]: Fact1: Streams may start with runoff or water seeping out of a spring., Fact2: Most water comes from precipitation., Question: What do most streams start with? (A) swamp vegetation (B) heat produced (C) loose dirt (D) Decibels (E) Veins and arteries. (F) matter vibrating (G) visible energy (H) precipitation
[A]:
H