Which of Your Daily or Weekly Habits May Need to Be

Which of your daily or weekly habits may need to be modified when preparing for finals?

A) You should plan to sleep an hour or two less each night.
B) You should plan to spend some time studying every day, including weekends.
C) You will have to eliminate all of your extracurricular activities.
D) You should lock yourself in your room until you are prepared for each of your exams.