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").

Input: Consider Input: An example of seed dispersal is animals eating what? (A) dirt (B) hard shells (C) grass (D) animals

Output: B


Input: Consider Input: Which of the following is an example of ecological succession? (A) a group of horses slowly becomes extinct due to loss of habitat (B) a group of rats in a lab learn to navigate a maze (C) a soccer team trains for the championship (D) Trees, insects, and birds in a forest grew from wildfire-ravaged lands

Output: D


Input: Consider Input: A retina may be illuminated by (A) moving animals (B) open circuits (C) dark bedroom (D) campfires


Output: D