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 can be used as local anesthetic agent for infiltration if a patient is allergic to amide and ester anaesthetic derivatives \nSelect and explain. \nA. Nitrous oxide, B. Bupivacaine, C. Phenylephrine, D. Diphenhydramine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]