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
[{'content': 'Prostaglandins are used in all except ? \nSelect and explain. \nA. Cervical ripening, B. PPH, C. Erectile dysfunction, D. Palliative treatment of PDA', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Palliative treatment of PDA", 'role': 'assistant'}]