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': 'All are true regarding silver sulfadiazine used in burns except \nSelect and explain. \nA. Diffuses well through eschar, B. Causes wound maceration, C. Causes hypertrophic granulation, D. Does not cause pain', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Silver sulfadiazine diffuses poorly through the eschar. So it is used once eschar is separated and wound is clean.', 'role': 'assistant'}]