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: In order for crops to grow food safely pesticides are used on them. When it floods, this can cause what to be poisonous? (A) Corn (B) air (C) Runoff (D) farmers
Example Output: C

Example Input: migration is when what move to different locations in an annual cycle? (A) animal figurines (B) sedentary animals (C) habitual creatures (D) currents
Example Output: C

Example Input: Where would a greenhouse best be used? (A) Bahamas (B) Nebraska (C) Florida (D) Mexico
Example Output:
B