You are given a science question (easy-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.

Input: Consider Input: Which group of organisms can make food by a process called chemosynthesis?  
 (A) scavengers (B) producers (C) consumers (D) decomposers

Output: B


Input: Consider Input: Which form of energy is found in food?  
 (A) chemical (B) electrical (C) sound (D) mechanical

Output: A


Input: Consider Input: A positively-charged hydrogen ion has a much smaller radius than a neutral hydrogen atom. Which best explains this difference?  
 (A) The nucleus is the least dense region of an atom. (B) Electrons are located far from the nuclei of their atoms. (C) Most of the volume of atoms is filled with the particles they contain. (D) The repulsion of protons and neutrons keeps them on opposite ends of atoms.


Output: B