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 antitubercular drug metabolism is under genetic control - \nSelect and explain. \nA. Rifampicin, B. INH, C. Cyclosporine, D. PZM', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., INH o INH is metabolized by liver by acetylations and metabolites are excreted in urine. The rate of acetylation of INH is under genetic control. The variations.", 'role': 'assistant'}]