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
One month old baby is referred for failure to thrive. On examination there are features of congestive cardiac failure. Femoral pulses are feeble compared to brachial pulses. The likely diagnosis is 
Select and explain. 
A. Coarctation of aoa, B. Patent ductus aeriosus, C. Congenital aoic stenosis, D. Congenital aoa-iliac disease
A: Coarctation of aoa
Answer: A: Coarctation of aoa 
Explanation: In coarctation of aoa there will be radiofemoral delay. Ghai essential of pediatrics, eighth edition, p.no:432