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: Amphibians undergo changes in structure of being in that (A) salamanders can regrow their tails (B) salamanders can lose their tails (C) frogs can breathe air and water (D) they begin as a different looking being
Example Output: D

Example Input: A needle lined with magnets will pull north. If north is to the right and you want to go west, you'd walk (A) straight (B) left (C) backwards (D) right
Example Output: A

Example Input: Which of the following reflects the most light? (A) snow (B) root beer (C) coal (D) the night sky
Example Output:
A