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 hotter a main sequence star is, the brighter it is.
 Question: A main sequence star that is not bright is not among the _____ stars 
 Choices: A)hottest 
B)coolest
hottest