Which of the Following Statements Applies to Sleep Deprivation

Which of the following statements applies to sleep deprivation?

A) Going without sleep for even 24 hours can lead to temporary sleep-deprivation psychosis.
B) If you go without sleep for 32 hours, you need to then sleep for 32 hours to recover completely.
C) Generally little impairment on complex mental tasks occurs after two or three days without sleep.
D) With few exceptions, four days or more without sleep is quite easy for most people.