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: Pathology
[{'content': 'Chronic active hepatitis seen in - \nSelect and explain. \nA. Methyldopa, B. Oestrogen, C. Erythromycin, D. Tetracycline', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Important drugs causing chronic hepatitis\xa0\xa0→ Isoniazid, Halothane, methydopa, oxyphenisatin.', 'role': 'assistant'}]