This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Local and Regional Anesthesia), Subject name: Anaesthesia
[{'content': 'Shortest acting local anaesthetics - \nSelect and explain. \nA. Lignocaine, B. Bupivacaine, C. Etidocaine, D. Chlorprocaine', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Chlorprocaine Local anethatics. duration of actionShort duration(< 30 min)Low potencyIntermediate duration (30-90 min)Intermediate potencyLong duration (> 120 min) High potencyChlorprocaine (shortest acting) LignocaineMepivacaineBupivacaineTetracaineProcainePrilocaincCocaineEtodicaineRopivacaineDibucaine (longest acting)", 'role': 'assistant'}]