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: DNA contains genetic instructions for proteins, and RNA helps assemble the proteins., Fact2: DNA is the genetic material responsible for heredity., Question: The genetic material responsible for heredity contains what? (A) wavelengths and photons (B) instructions for proteins (C) characteristics (D) pre-assembled proteins (E) organelles (F) Chemical energy (G) A compound that donates proton (H) blood
[A]: B


[Q]: Fact1: the color of leaves on deciduous trees usually changes in the autumn season, Fact2: Peachleaf willow is a deciduous tree., Question: What does a peachleaf willow do in the autumn? (A) staying warm (B) It expands (C) Die (D) Change colors (E) Fall over (F) Grow new flowers (G) flowers (H) spread flower seeds
[A]:
D