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: which form of transportation has zero emissions? (A) motorbikes (B) speed boats (C) hybrid cars (D) pedal bikes
Example Output: D

Example Input: Magnetic media, such as TVs, computer monitors, credit cards and pacemakers can be damaged when exposed to (A) neodymium (B) a paper clip (C) copper penny (D) metal nails
Example Output: A

Example Input: There are now many more people because of (A) efficient farming (B) more cities (C) computers (D) global warming
Example Output:
A