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: Which is a byproduct of a lightbulb? (A) taste (B) death (C) warmth (D) sound

Output: C


Input: Consider Input: A plant's roots break down rocks as the roots do what? (A) decay (B) grow old (C) develop (D) dcerease

Output: C


Input: Consider Input: Humans are able to eat (A) only meat products and byproducts (B) exclusively grains and fruits (C) a full assortment of food groups including meat, grains, and vegetables (D) sea life and only green vegetables


Output: C