This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anaesthesia
[{'content': 'Local anaesthetic with prolonged action \nSelect and explain. \nA. Procaine, B. Cocaine, C. Lidocaine, D. Dibucaine', 'role': 'user'}, {'content': "Answer: D \nExplanation: Dibucaine is the longest acting local anaestheticChlorprocaine is the shoest acting local anaestheticDecreasing order of duration: Dibucaine >Bupivacine= Tetracaine = Ropivacaine=Etidocaine > Prilocaine = lignocaine =Mepivacaine = Cocaine >Procaine >Chloprocaine(Refer: stoelting's pharmacology and physiology in anaesthetic practice, 5th edition, pg no.290,304)", 'role': 'assistant'}]