Bill has been given a project that should take him two and a half hours to complete. What is the best way for him to schedule his time?

A. Allow for breaks anytime he needs them but work hard

B. Break the time into chucks, each lasting for 50 minutes.

C. Use a stop watch to time himself, and work for 2 hours and 30 minutes.

D. Work for an hour, take a break, repeat, and work for 30 minutes.