This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
Not true in narcolepsy is- 
Select and explain. 
A. Cataplexy, B. Sleep architecture normal, C. Loss of muscle tone, D. Hallucination
B: Sleep architecture normal
Answer: B: Sleep architecture normal 
Explanation: Ans. B. Sleep architecture normalThere is disturbed REM sleep.Cataplexy (sudden loss of muscle tone) is the most common accessory symptom.There may be hallucinations mostly hypnagogic and hypnopompic