This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Heart, Circulation, and Blood, Subject name: Physiology
[{'content': 'Cardiac output = 5 lit/min. BSA = 1.7 m2, calculate the cardiac index: \nSelect and explain. \nA. 5 L/m2, B. 4.8 L/m2, C. 3.0 L/m2, D. 3.7 L/m2', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C.3.0L/m2Cardiac output average = 5.0 L/minCardiac index = cardiac out per square of body surface area.=5L/min1.7m2=3lit/min/m2', 'role': 'assistant'}]