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
Which of the following drugs is used for termination as well as prophylaxis of paroxysmal supraventricular tachycardia ? 
Select and explain. 
A. Digoxin, B. Verapamil, C. Propranolol, D. Quinidine
B: Verapamil
Answer: B: Verapamil 
Explanation: None