This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S., Subject name: Pediatrics
[{'content': 'What is the approximate Total fetal cardiac output? \nSelect and explain. \nA. 300 ml/kg/min, B. 450 ml/kg/min, C. 600 ml/kg/min, D. 150 ml/kg/min', 'role': 'user'}, {'content': "Answer: B \nExplanation: b. 450ml/kg/min(Ref: Nelson's 20/e p 2161)Total fetal cardiac output, i.e. combined output of both left and right ventricles--is 450mL/kg/min.65% of descending aortic blood flow returns to the placenta and remaining 35% perfuses the fetal organs and tissues.", 'role': 'assistant'}]