Night Terrors Are Different from Nightmares in That ____

Night terrors are different from nightmares in that ____.

A) nightmares occur more often in children and night terrors occur more often in adults
B) nightmares occur during REM sleep and night terrors occur during non-REM slow-wave sleep
C) nightmares are not easily recalled in the morning but night terrors are often vividly recalled
D) the causes of nightmares are not easily understood, while night terrors are clearly a result of stress