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': 'Absolute indication for cesarean section is : \nSelect and explain. \nA. Dystocia, B. Previous rupture of uterus, C. Breech presentation, D. Fetal distress', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Previous rupture of uterus', 'role': 'assistant'}]