This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Pharmacology
[{'content': 'The following drugs cause methemoglobinemia: \nSelect and explain. \nA. Aniline, B. Dapsone, C. Nitrates, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (D) All of the above(Ref: KDT 8th/e p587,832, Harrison 17th/e p35.4)Drugs causing Methemoglobinemia areAniline derivativesDapsonePrilocaineNitratesNitritesNitrogen oxidesNitro and nitrosohydrocarbonsPhenazopyridinePrimaquineSulfonamides', 'role': 'assistant'}]