This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Pharmacology
[{'content': 'Preferred drug for the treatment of ventricular tachycardia is \nSelect and explain. \nA. Digoxin, B. Propranolol, C. Diltiazem, D. Lignocaine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Doc for ventricular tachycardia - Lignocaine', 'role': 'assistant'}]