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
[{'content': 'Which of the following calcium channel blocker would be useful in the treatment of supraventricular tachycardia by suppressing AV node conduction: \nSelect and explain. \nA. Amlodipine, B. Nimodipine, C. Verapamil, D. Nifedipine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]