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: Unknown
[{'content': 'Post lumbar puncture headache is minimized by all except: \nSelect and explain. \nA. Keep stylet and remove needle, B. Atraumatic needle, C. Small diameter needle, D. Hydration by crystalloid infusion', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (Refer: Lee’s, Clinical Anaesthesia, 12th edition, pg no:685-687)\nPost-Lumbar Puncture Headache\nEtiology\nCSF leak leading to decreased ICP\nBreach or scratching of dura due to:\n\nLumbar puncture\nMyelogram\nSpinal Anaesthesia\nWet epidural tap\nUncomplicated epidural due to scratching of dura\n\nFactors affecting post lumbar puncture headache', 'role': 'assistant'}]