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).

Paragraph: The more acidic a solution is, the closer its pH value will be to 0
 Question: Erin is trying to get her solution to have a pH as close to zero as possible. The best way for Erin to do that is to have the acidity of the solution 
 Choices: A)decrease 
B)increase
increase