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: The cultivation of a range of crop types in a specific order has a positive impact on (A) soil quality (B) water quality (C) air quality (D) atmospheric conditions

Output: A


Input: Consider Input: A container with a printed scale on it's side is used to (A) measure weight (B) hold flowers (C) hear through doors (D) measure volume

Output: D


Input: Consider Input: Water vapor is an example of what? (A) moistness (B) warmth (C) heat (D) coldness


Output: A