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': 'Long acting local anaesthetic ? \nSelect and explain. \nA. Procaine, B. Lignocaine, C. Prilocaine, D. Dibucaine', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Dibucaine", 'role': 'assistant'}]