This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: Anaesthesia
[{'content': 'Shoest action local anaesthetic: \nSelect and explain. \nA. Procaine, B. Cocaine, C. Dibucaine, D. Chloroprocaine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Shoest Acting LA Chlorprocaine Longest acting LA Dibucaine', 'role': 'assistant'}]