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
Pharmacological closure of patent ductus aeriosus in a premature infant is by administration of ______________ 
Select and explain. 
A. Aspirin, B. Estrogen, C. Ibuprofen, D. Prednisolone
C: Ibuprofen
Answer: C: Ibuprofen 
Explanation: PDA treated with PG inhibitors. Ref : Ghai essential of pediatrics, eighth edition, p.no:417