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: Anatomy
[{'content': 'Blood flow in intervillous space at term \nSelect and explain. \nA. 150 ml, B. 250 ml, C. 300 ml, D. 500 ml', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A mature placenta has 500 m blood out of which 150 no is in the intervillous space and 350 ml in villi system. Ref: Datta Observe 9e pg 29.', 'role': 'assistant'}]