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: What becomes smoother through weathering? (A) rainbow (B) water (C) cat (D) pumice

Output: D


Input: Consider Input: What does gravity cause substances on a planet? (A) things to move sideways (B) things to be moved upwards (C) things to descend to the lowest surface possible (D) things to stay in the same place

Output: C


Input: Consider Input: if an adult salmon goes back to where it was born, which of these is likely? (A) it wants to deposit its offspring (B) it is about to die (C) it is looking for its friend (D) it is searching for its mother


Output: A