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': 'Most deaths involving placenta pre result from: \nSelect and explain. \nA. Infection, B. Toxemia, C. Hemorrhage, D. Thrombophlebitis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Hemorrhage', 'role': 'assistant'}]