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': 'Neurolept analgesia all are true except : \nSelect and explain. \nA. Can be used along with 02 & N20, B. Causes focal dystonia, C. Fentanyl- droperidol, D. None', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. None', 'role': 'assistant'}]