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: Unknown
[{'content': 'Eutectic mixture of local anesthetic (EMLA) cream is - \nSelect and explain. \nA. Bupivacaine 2.0% + Prilocaine 2.5%, B. Lidocaine 2.5% + Prilocaine 2.5%, C. Lidocaine 2.5% + Prilocaine 5%, D. Bupivacaine 0.5% + Lidocaine 2.5%', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans-B', 'role': 'assistant'}]