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 of the following, when plugged into an outlet, completes a circuit? (A) gold (B) glass (C) plastic (D) rubber
Example Output: A

Example Input: An object converts electrical energy into sound on a (A) iphone (B) soft carpet (C) outside wall (D) wooden table
Example Output: A

Example Input: As the Earth rotates around a star, the world may (A) freeze solid (B) become miniature (C) explode (D) enjoy various seasons
Example Output:
D