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
[{'content': "Hallucinations which occur at the 'sta' of sleep is : \nSelect and explain. \nA. Hypnagogic hallucinations, B. Hypnopompic hallucinations, C. Jactatio nocturna capitis, D. Non - specific hallucination", 'role': 'user'}, {'content': 'Answer: A \nExplanation: A. i.e. Hypnagogic hallucinations', 'role': 'assistant'}]