This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
Pa of brain involved in narcolepsy 
Select and explain. 
A. Neocoex, B. Hypothalamus, C. Cerebellum, D. Putamen
B: Hypothalamus
Answer: B: Hypothalamus 
Explanation: Harrison's principles of internal medicine 17th edition *Recently several convergent lines of evidence suggest that hypothalamic neuropeptide hypocretin(orexin) is involved in the pathogenesis of narcolepsy.