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 topical agent boosts cell - mediated immunity in burns \nSelect and explain. \nA. Mafenide acelate, B. Silver nitrate, C. Cerium nitrate, D. Povidone iodine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Cerium nitrate boosts cell - mediated immunity and forms sterile eschar in burns.', 'role': 'assistant'}]