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: A ship navigates with a magnetic compass because it is (A) predictable (B) unpredictable (C) waterproof (D) tradition
Example Output: A

Example Input: If someone wants to use a natural gas in order to assist something necessary, they can (A) use it to bathe in (B) eat it to die quickly (C) freeze it to make ice cubes (D) ignite it to warm their body
Example Output: D

Example Input: A sunburn is most likely to happen after hiking in a (A) desert (B) forest (C) wetland (D) jungle
Example Output:
A