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: The darker the urine, the less water it contains.
 Question: Mona urinated yesterday morning and the urine was very light. When she urinated today the urine was very dark. Which urination contained more water? 
 Choices: A)yesterday morning 
B)today
yesterday morning