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 two behaviors best demonstrate stewardship?  
 (A) reducing consumption, recycling wastes (B) increasing consumption, discarding wastes (C) reducing consumption, discarding wastes (D) increasing consumption, recycling wastes

Output: A


Input: Consider Input: Which occurs as a result of Earth's tilt on its rotating axis?  
 (A) movement of the tides (B) prevalent or trade winds (C) seasonal changes in the climate (D) light and dark changes of day and night

Output: C


Input: Consider Input: Copper (Cu) reacts with oxygen (O) to form copper oxide (CuO). The properties of CuO are most likely  
 (A) different from copper or oxygen. (B) similar to both copper and oxygen. (C) similar only to copper. (D) similar only to oxygen.


Output: A