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: Pharmacology
[{'content': 'Methemoglobinemia may be caused by following, except: \nSelect and explain. \nA. Sulfonamides, B. Phenytoin, C. Phenacetin, D. Salicylates', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Salicylates', 'role': 'assistant'}]