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': 'Oxytocin is preferred over ergometrine in: \nSelect and explain. \nA. Induction of labour, B. Prevention of PPH, C. Both, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Comparison of ergot derivatives and Oxytocin', 'role': 'assistant'}]