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': 'Characteristic of alcohol withdrawal? \nSelect and explain. \nA. Hallucination, B. Illusion, C. Delusion, D. Drowsiness', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Hallucination', 'role': 'assistant'}]