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: Battery powered vehicles have less emissions than (A) lawnmowers (B) wind turbines (C) solar power (D) dragsters
Example Output: D

Example Input: When cutting down rain forests, it is important to keep in mind air quality. When too many trees are cut down in a given area, there may be decrease in the air's (A) quality (B) carbon dioxide (C) helium amounts (D) carbin dioyide levels
Example Output: A

Example Input: A pile of iron will (A) tug devices for locating directions (B) give false locations to planes (C) be a huge distraction (D) cause ships to crash
Example Output:
A