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': 'Which drug is not metabolised by acetylation? \nSelect and explain. \nA. INH, B. Dapsone, C. Hydralazine, D. Metoclopramide', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Acetylation is a phase II metabolic reaction. Drugs metabolized by acetylation are Sulfonamides, Hydralazine, Isoniazid, Procainamide. Individuals who are slow acetylators are predisposed to drug-induced autoimmune disorders. Ref: K.D.T 6th Ed Page 25', 'role': 'assistant'}]