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
Prostaglandin derivatives are used in the following conditions except : 
Select and explain. 
A. Cervical ripening, B. As an abortifacient, C. NSAID induced peptic ulcer, D. Patent ductus arteriosus
D: Patent ductus arteriosus
Answer: D: Patent ductus arteriosus 
Explanation: None