This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sleep-Wake Disorders, Subject name: Psychiatry
About narcolepsy all are true except? 
Select and explain. 
A. Associated with cataplexy, B. Equal in male and female, C. NREM, D. Hypnogogic hallucinations
C: NREM
Answer: C: NREM 
Explanation: Ans. (c) NREMRef. Kaplan and sadock's 10/e, chapter 24.2