Why Is It Impossible for Sleepwalking to Occur During REM

Multiple Choice

Why is it impossible for sleepwalking to occur during REM sleep?

A) The postural muscles are so relaxed that they would not support a person.
B) The heart rate is so slow that there would not be enough blood flowing to the large muscles.
C) The REM stage is too brief for any prolonged activity.
D) The EEG shows too much spontaneous activity for specific muscles to be stimulated.