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 conservation is (A) jogging (B) reducing ethanol use (C) hiking (D) raking leaves

Output: B


Input: Consider Input: in order for a person's burger to make it successfully into the toilet, which of these must be functional? (A) the respiratory system (B) the digestive system (C) the circulatory system (D) the destructive system

Output: B


Input: Consider Input: Which of these live on land as adults? (A) tiger sharks (B) electric eels (C) fire-bellied toads (D) catfish


Output: C