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': 'Epidural anaesthesia decrease risk of – a) Headacheb) Hypotensionc) Meningitisd) Arachnoiditis \nSelect and explain. \nA. abc, B. ad, C. bc, D. acd', 'role': 'user'}, {'content': 'Answer: D \nExplanation: As dura is not punctured in epidural anesthesia, chances of postdural puncture headache, meningitis and arachnoiditis are less.', 'role': 'assistant'}]