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: Warm water cant hold as much dissolved oxygen as cool water, so an increase in the temperature of water decreases the amount of oxygen it contains.
 Question: The _____ waters have the least dissolved oxygen. 
 Choices: A)warmest 
B)coldest
warmest