Which of the Following Examples Best Captures the Concept of Sleep

Multiple Choice

Which of the following examples best captures the concept of sleep debt?

A) You develop a cold after staying up all night to study for an exam.
B) You pull two "all-nighters" in a row, and the next night you sleep slightly longer than normal.
C) Your psychology presentation goes poorly because you did not sleep well the night before.
D) You need only about five hours of sleep each night.