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: Medicine
[{'content': 'Chronic hepatitis of moderate to severe nature can be a result of treatment with: \nSelect and explain. \nA. INH, B. Sulfonamides, C. Estrogens, D. Erythromycin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Oxyphenisatin, methyldopa, and isoniazid have been associated with moderate to severe chronic hepatitis. Ref: Harrisons Principles of Internal Medicine, 18th Edition, Page 2561', 'role': 'assistant'}]