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': 'Which of the following drug has longest Half Life \nSelect and explain. \nA. Amiodarone, B. Quinidine, C. Diltiazem, D. Procainamide', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Refer kDT 7/e p 533 Amiodarone has the longest half-lifeof all the antiarrhythmics (weeks).', 'role': 'assistant'}]