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).

Example input: Paragraph: Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.
 Question: John's town used to have lots of water, back when there were only a few hundred people. However, now that the town holds several thousand people, the water availability is 
 Choices: A)scarce 
B)plentiful
Example output: scarce
Example explanation: Based on the information given in the paragraph, population growth will make water more scarce, so that is the correct answer.
Q: Paragraph: With less ozone in the stratosphere, more UV rays reach the ground.
 Question: If Mona is observing the atmosphere and measuring the amount of ozone in it, what happens to the amount of UV rays that will reach the ground if she notices the amount of ozone in the stratosphere is increasing? 
 Choices: A)increase 
B)decrease
A:
decrease