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: Surgery
[{'content': 'Which of the following local anaesthetic is active topically? \nSelect and explain. \nA. Lidocaine and Benzocaine, B. Lidocaine and mepivacaine, C. Mepivacaine and benzocaine, D. Prilocaine and mepivacaine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]