You are given a science question (hard-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:
A young ocean animal has two parents. Each of the parents has eight arms. How many arms does the young animal most likely have?  
 (A) 2 (B) 4 (C) 8 (D) 16

Ex Output:
C


Ex Input:
When you make soap bubbles, what is inside the bubbles?  
 (A) Air (B) Soap (C) Water (D) Nothing

Ex Output:
A


Ex Input:
Sugar is made up of many molecules. When sugar is dissolved in water, what happens to these molecules?  
 (A) They no longer exist. (B) They exist in solution. (C) They evaporate. (D) They combine with water to form new elements.

Ex Output:

B