This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pharmacology
[{'content': 'Drug of choice for ventricular premature beats (VPC) due to digitalis toxicity is: \nSelect and explain. \nA. Diphenylhydantoin, B. Quinidine, C. Amiodarone, D. Verapamil', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (A) Diphenylhydantoin(Ref: KDT 6th/e p498)Phenytoin is an alternative to lignocaine for digitalis induced ventricular arrhythmia.', 'role': 'assistant'}]