This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sleep disorders and eating disorders, Subject name: Psychiatry
[{'content': 'Hypnagogic hallucinations are seen in \nSelect and explain. \nA. Depression, B. Mania, C. Narcolepsy, D. Schizophrenia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: NarcolepsyThe classic tetrad of symptoms is:i. Sleep attacks (most common): ii. Cataplexy: iii. Hypnagogic hallucinations: iv. Sleep paralysis (least common): Ref: A Sho Textbook of Psychiatry, Niraj Ahuja, 7th Edition, pg. no. 138', 'role': 'assistant'}]