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: As greenhouse gases increase, changes will be more extreme.
 Question: If the people in Mary's country start to create more greenhouse gases, what will happen to the possibility that changes may occur? 
 Choices: A)increase 
B)decrease
increase