You will be given a definition of a task first, then some input of the task.
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: More particles inside the container means more collisions, and more collisions mean a higher pressure.
 Question: If we keep filling a balloon with oxygen particles what happens to the pressure? 
 Choices: A)increases 
B)decreases
Output:
increases