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: Gas can fill any container it is given, and liquid (A) is standard weight and size (B) is the opposite of variable (C) only needs a few (D) uses what it needs
Example Output: D

Example Input: Which is likely born via hatching? (A) a raven (B) a goat (C) a horse (D) a cat
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