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': 'Cesarean section is absolutely indicated in : \nSelect and explain. \nA. Previous H/0 LSCS, B. Type IV placenta pre, C. Type II placenta pre, D. Past H/o hysterotomy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Type IV placenta pre', 'role': 'assistant'}]