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': 'Spontaneous delivery of placenta reduces which complication compared to manual extraction of placenta \nSelect and explain. \nA. Deep - vein thrombosis, B. Post partum infection, C. Retention of placental products, D. Amniotic fluid embolism', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Spontaneous placental delivery reduces risk of operative blood loss and infection.', 'role': 'assistant'}]