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:
In one area, a large source of prey for eagles is rabbits. If the number of rabbits suddenly decreases, what effect will it most likely have on the eagles?  
 (A) Their numbers will increase. (B) Their numbers will decrease. (C) They will adapt new behaviors. (D) They will migrate to new locations.

Ex Output:
B


Ex Input:
A student is asked to bring something that feels rough to class. Which would be BEST for him to bring?  
 (A) Pillow (B) Marble (C) Sandpaper (D) Trading card

Ex Output:
C


Ex Input:
Which correctly arranges three scientific terms-theory, law, and hypothesis-from least to most accepted or tested?  
 (A) theory, hypothesis, law (B) hypothesis, law, theory (C) theory, law, hypothesis (D) hypothesis, theory, law

Ex Output:

D