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 most likely led to certain rocks having less friction? (A) a babbling brook (B) people (C) a light wind (D) money
Example Output: A

Example Input: If you had a telescope what is something meant to be viewed by it? (A) Greater Pewee (B) Vibrio (C) Alcor (D) Heisenberg
Example Output: C

Example Input: a paper clip is often made of ferromagnetic (A) hard shiny material (B) cake (C) water (D) rubber
Example Output:
A