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': 'Plasma 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: Half-life of carbimazole is around 8 hours whereas propylthiouracil has t1/2 of 2 hours.', 'role': 'assistant'}]