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: Gynaecology & Obstetrics
[{'content': 'All are used in treatment for PPH except : \nSelect and explain. \nA. Oxytocin, B. Carboprost, C. Ergometrine, D. Ritodrine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ritodrine', 'role': 'assistant'}]