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: Which item is designed to change electrical energy into heat energy?  
 (A) Alarm clock (B) Hand dryer (C) Fan (D) Telephone
Example Output: B

Example Input: Which object works best when reflecting light?  
 (A) mirror (B) camera (C) binoculars (D) eyeglasses
Example Output: A

Example Input: A solar eclipse occurs when  
 (A) the Moon blocks the Earth from the Sun. (B) the first four planets in the solar system are aligned. (C) Earth blocks the Moon from the Sun. (D) Earth's shadow falls on the Sun.
Example Output:
A