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 - \nSelect and explain. \nA. 4 hours, B. 8 hours, C. 16 hours, D. 24 hours', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., 8 hours o Half life of propylthiouracil : 1-2 hours o Half life of carbimazole : 6-10 hours", 'role': 'assistant'}]