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").

Input: Consider Input: A person yells inside a garage. Their voice echoes and they hear (A) a bird chirping away (B) a dog barking loudly (C) a car engine rev (D) a shout repeating softer

Output: D


Input: Consider Input: If you want to bottle your own pop, you should invest in (A) Andy Warhol paintings (B) an aluminum mine (C) blonde dye bottles (D) a telescope

Output: B


Input: Consider Input: An organism's requirements and its survival rate have what kind of relationship? (A) indirect (B) direct (C) inverse (D) reverse


Output: B