You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).
Q: Paragraph: A: The more carbon atoms there are, the greater the number of possible arrangements of carbon atoms.
 Question: If Mona is manipulating carbon atoms in her science lab and she decreases the number of carbon atoms she has to work with, what happens to the number of possible arrangements the carbon atoms can take? 
 Choices: A)increase 
B)decrease
A:
decrease