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.

Example Input: A shallow container of salt water is placed in sunlight for a day. Which is the most likely result?  
 (A) All of the mixture will evaporate. (B) The salt will keep the water from evaporating. (C) The salt will separate from the water and float at the top of the container. (D) Only the water will evaporate and the salt will remain in the container.
Example Output: D

Example Input: Many sports stadiums use grass, but some use fake grass called artificial turf. Artificial turf is made of fibers that look like real grass. In which way is this technology most likely beneficial?  
 (A) It uses less water. (B) It produces more heat. (C) It releases less moisture. (D) It absorbs more carbon dioxide.
Example Output: A

Example Input: The chemical equation below shows a reaction of copper (Cu) with silver nitrate (AgNO_{3}) yielding silver (Ag) and copper(II) nitrate (Cu(NO_{3})_{2}) Cu + 2AgNO_{3} -> 2Ag + Cu(NO_{3})_{2} Silver and copper(II) nitrate are called the  
 (A) reactants. (B) products. (C) catalysts. (D) inhibitors.
Example Output:
B