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': 'Drug of choice for ventricular arrhythmias due to myocardial infarction (MI) is: \nSelect and explain. \nA. Quinidine, B. Amiodarone, C. Xylocaine, D. Diphenylhydantoin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]