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: When a squid moves forward, water is (A) pushed directly behind it (B) pushed up and below it (C) evaporated by salt water (D) pushed in front of it

Output: A


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

Output: D


Input: Consider Input: Fogged up glass on a store window is a stage in the (A) food chain (B) water cycle (C) life cycle (D) lunar cycle


Output: B