Joyce Is a Well-Organized Student and Plans Her Activities as Well

Joyce is a well-organized student and plans her activities as well as her studying in advance.Joyce knows she has a history exam next Friday,so she plans to sleep 4 hours on Wednesday night,4 hours on Thursday night,and then sleep 16 hours Friday night to make up for the missed sleep.Researchers know that Joyce's plan:

A) will work because people do not show signs of sleep deprivation for at least three days so her test performance will not suffer.
B) is faulty because it is unlikely that a young adult college student can sleep 16 hours straight.
C) is faulty because we do not make up all of the sleep time we have lost.
D) will work because young adult college students need only 4 hours of sleep per night.