This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, 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: Plasma half life of carbimazole is 6-10 hours. Half life of PTU is 1.5 hrs- very sho acting (REF.Essential of medical pharmacology K D TRIPATHI 6 Edition, Page No - 250)', 'role': 'assistant'}]