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: Pediatrics
An 8-month-old female child presented to emergency with a hea rate of 220/minute and features of congestive hea failure. Her hea rate comes down to normal after administering intravenous adenosine. What is the most likely diagnosis? 
Select and explain. 
A. Atrial fibrillation, B. Atrial flutter, C. Paroxysmal supraventricular tachycardia, D. Ventricular tachycardia
C: Paroxysmal supraventricular tachycardia
Answer: C: Paroxysmal supraventricular tachycardia 
Explanation: Ans. is 'c' i.e., Paroxysmal supraventricular tachycardia o Adenosine is the DOS for PSVT.