Sleepwalking, Like Night Terrors, Is Experienced Most Often by Children

Sleepwalking, like night terrors, is experienced most often by children. Another similarity between sleepwalking and night terrors is that:

A) it is impossible to awaken a person while they are sleepwalking or having night terrors.
B) both sleepwalking and night terrors occur in stages 3 and 4 of the slow wave sleep.
C) it is easy to awaken a person while they are sleepwalking or having night terrors.
D) people awaken themselves during the sleepwalking or night terrors.