This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pediatrics
[{'content': 'An 8 month old female child presented to emergency with a hea rate of 220/minute and features of cogestive hea failure. Her hea rate comes down to normal after administering intravenous adenosine. What is the most likely diagnosis ? \nSelect and explain. \nA. Atrial fibrillation, B. Atrial flutter, C. Paroxysmal supraventricular tachycardia, D. Ventricular tachycardia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Most common indication of adenosine is paroxysmal supra ventricular tachycardia Ref : Harrison principals and practice of internal medicine, 19th edition, p.no:1479', 'role': 'assistant'}]