Given the task definition and input, reply with output. 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: Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.
 Question: The population in Milo's city has been decreasing recently. What will happen to the city's level of water scarcity? 
 Choices: A)decrease 
B)increase
decrease