Which Scenario Best Illustrates the Concept of a Night Terror

Which scenario best illustrates the concept of a night terror?

A) Pierre dreams that a serial killer stands over his bed with a machete in his hand; Pierre is certain that he faces imminent death.
B) Chandra, who suffers from sleep apnea, dreams that she is sinking to the bottom of a lake and wakes up gasping for air.
C) Hector demonstrates acute distress even though he is asleep. When his roommate wakes him up, he is confused and does not remember being so upset.
D) Pauline has recurring nightmares in which her brother is trapped in a sinking car; because of this she worries obsessively about her brother's safety.