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.

Ex Input:
Which are examples of inherited traits?  
 (A) specific beliefs (B) fingerprints (C) memories (D) nose shape

Ex Output:
D


Ex Input:
Which of these is the center of our solar system?  
 (A) Mars (B) The moon (C) Jupiter (D) The sun

Ex Output:
D


Ex Input:
What causes ocean water to evaporate in the water cycle?  
 (A) energy from the Sun (B) energy from ocean waves (C) energy from Earth's rotation (D) energy from Earth's moon

Ex Output:

A