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
Drug of choice for ventricular arrhythmias due to mycardial infarction (MI) is: 
Select and explain. 
A. Quinidine, B. Amiodarone, C. Xylocaine, D. Diphenylhydantoin
C: Xylocaine
Answer: C: Xylocaine 
Explanation: Xylocaine or lidocaine administered intravenously is specifically indicated in the acute management of ventricular arrhythmias such as those occurring in relation to acute myocardial infarction, or during cardiac manipulation, such as cardiac surgery. it belongs to class 1b agents other best drugs to prevent arrhythmias post-MI-lidocaine Ref: