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': 'Drug of choice for ventricular arrhythmia due to myocardial infarction is \nSelect and explain. \nA. Quinidine, B. Amiodarone, C. Xylocaine, D. Diphenylhydantoin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Refer kDT 6/e p 519 Drug of choice for ventricular arrhythmias with myocardial infarction is lignocaine Drug of choice for supraventricular arrhythmia after myocardial infection is beta blockers cardiac function is adequate', 'role': 'assistant'}]