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 material is most easily recycled at school?  
 (A) plastic wrap (B) notebook paper (C) ice cream sticks (D) rubber erasers

Output: B


Input: Consider Input: Diamonds are sometimes used as the tips of drill bits. Which physical property of a diamond MOST likely makes it a good cutting tool?  
 (A) its electrical properties (B) its thermal properties (C) its hardness (D) its density

Output: C


Input: Consider Input: Which best explains the importance of nitrogen in the cycling of energy and matter?  
 (A) Nitrogen increases protein production in plants. (B) Nitrogen decreases protein production in plants. (C) Nitrogen decreases the effectiveness of photosynthesis. (D) Nitrogen increases the effectiveness of photosynthesis.


Output: A