This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
[{'content': 'Half-life of carbimazole is \nSelect and explain. \nA. 4 hours, B. 8 hours, C. 16 hours, D. 24 hours', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Carbimazole has a half-life of 5.3 to 5.4 hours. It is possible that the plasma half-life may also be prolonged by renal or hepatic disease. See section 4.2. Thiamazole crosses the placenta and appears in breast milk. Ref: kd tRIPATHI 8TH ED.', 'role': 'assistant'}]