Instructions: 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).
Input: Paragraph: For a given medium, sound waves travel more slowly at lower temperatures.
 Question: If Milo is listening to the radio in his room and the room gets colder, what happens to the speed of the sound waves generated by the radio? 
 Choices: A)increase 
B)decrease
Output:
decrease