In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

[EX Q]: Where might you find the substance used to make the shiny metallic foil paper used in cooking? (A) Clouds (B) Rocks (C) Wood (D) Leaves
[EX A]: B

[EX Q]: The earth makes its way around the sun. Because of the constant rotation, the appearance of these is unlikely to be regular. (A) the moon (B) the oceans (C) celestial bodies (D) the sun
[EX A]: C

[EX Q]: A bird would find nest making materials in a (A) building (B) pond (C) cave (D) tree
[EX A]:
D