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 tone is made when a hammer makes contact with (A) a waterfall (B) air (C) an solid object (D) a log
Example Output: C

Example Input: A rock may be used as a shelter by a (A) chicken (B) spider (C) giant squid (D) deer
Example Output: B

Example Input: Seasonal changes are made in response to changes in what? (A) mentality (B) buildings (C) environment safety (D) locales
Example Output:
D