This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Anatomy
[{'content': 'Which of the following drugs is used for termination as well as prophylaxis of paroxysmal supraventricular tachycardia? \nSelect and explain. \nA. Digoxin, B. Verapamil, C. Propanolol, D. Quinidine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (Ref: KDT 6/e p517) It is used for the treatment as well as prophylaxis of PSVT whereas adenosine is used only for the treatment of acute attack of PSVT.', 'role': 'assistant'}]