This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Which drug is not metabolized by acetylation \nSelect and explain. \nA. Isoniazide, B. Dapsone, C. Hydralazine, D. Metoclopropramide', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Impotant drug metabolised by acetylation are S- Sulphonamides including dapsone H-Hydralazine I-Isoniazide P-procainamide Ref-KDT 7/e p24', 'role': 'assistant'}]