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
Prostaglandins are used in all except ? 
Select and explain. 
A. Cervical ripening, B. PPH, C. Erectile dysfunction, D. Palliative treatment of PDA
D: Palliative treatment of PDA
Answer: D: Palliative treatment of PDA 
Explanation: Ans. is 'd' i.e., Palliative treatment of PDA