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").

Example Input: Natural resources come from nature, so if humans are reckless when working with nature, the amount of resources will (A) go down (B) laugh (C) go up (D) fly away
Example Output: A

Example Input: When there is an increase in atmospheric temperature, then (A) glaciers become too large (B) global sea level decreases (C) Antartica and Greenland icebergs will melt (D) Earth absorbs less sunlight
Example Output: C

Example Input: An example of conservation is (A) jogging (B) reducing ethanol use (C) hiking (D) raking leaves
Example Output:
B