It is Friday when Pooh, Haley, and Walt have the same test to take on the following Wednesday. Pooh stays up very late each night, even though he has to wake up early each morning, and crams for the test on Tuesday night. Haley stays up late on the weekend, but also studies for the test each and gets plenty of sleep on Monday and Tuesday nights. Walt gets 9 hours of sleep during each night and starts studying for the test on Sunday.

Who is most likely to make a trait error on the test?

A. Haley.

B. Pooh.

C. Walt.

D. They are all equally likely to make a trait error.