This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Maternal Anatomy and Physiology, Subject name: Gynaecology & Obstetrics
[{'content': 'Uteroplacental blood flow per minute \nSelect and explain. \nA. 200 ml / minute, B. 400 ml / minute, C. 300 ml / minute, D. 600 ml / minute', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Uteroplacental blood flow per minute : 450 - 650 mL/min', 'role': 'assistant'}]