Detailed Instructions: 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).
Problem:Paragraph: To reduce friction, oil is added to the engine.
 Question: If Milo's bike chain is not moving well and he adds some oil to it, what will happen to the levels of friction the chain experiences? 
 Choices: A)increase 
B)decrease
Solution:
decrease