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: Anaesthesia
[{'content': 'Drugs commonly used in pre-anaesthetic medication? \nSelect and explain. \nA. Diazepam, B. Scopolamine, C. Morphine, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A i.e. Diazepam; B i.e. Scopolamine; C i.e. Morphine', 'role': 'assistant'}]