This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'Utero-placental blood flow at term is : \nSelect and explain. \nA. 300-500 ml/min, B. 500-700 ml/min, C. 700-900 ml/min, D. 900-1100 ml/min', 'role': 'user'}, {'content': "Answer: B \nExplanation: The uterine blood flow is increased to 500-700 ml/min at term. Reference: Mudaliar and Menon's clinical obstetrics,12th edition, page no:40", 'role': 'assistant'}]