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: Sara is in a container representing an object. Her container has 30 balls flying around, representing particles. Tyler is in another container, and his contains 5 balls. Which person's container likely would be under the most pressure? 
 Choices: A)Sara's 
B)Tyler's
Sara's