This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Regional anaesthesia, Subject name: Anaesthesia
[{'content': 'Eutectic mixture of local anaesthetic (EMLA) cream \nSelect and explain. \nA. Bupivacaine 2.0% +Prilocaine 2.5%, B. Lidocaine 2.5% + Priocaine 2.5%, C. Lidocaine 2.5% + Prilocaine 5%, D. Bupivacaine 0.5% + Lidocaine 2.5%', 'role': 'user'}, {'content': 'Answer: B \nExplanation: EMLA is eutectic mixture of local anesthetics (2.5% lidocaine and 2.5% prilocaine)', 'role': 'assistant'}]