This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
[{'content': 'The half-life of Amiodarone is \nSelect and explain. \nA. 3-8 min, B. 3-8 hours, C. 3-5 weeks, D. 3-8 weeks', 'role': 'user'}, {'content': 'Answer: D \nExplanation: After oral administration, amiodarone only has a bioavailability of 30%. It also has a half-life of approximately 50 days, so it can take weeks for therapeutic effects to appear.', 'role': 'assistant'}]