This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'How much of blood flows through the kidneys? \nSelect and explain. \nA. 1-1.5 L/min, B. 1.5-2 L/min, C. 2-2.5L/min, D. 2.5-3 L/min', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 1-1.5 L/min.The total renal blood flow (RBF) is approximately 1.1-1.3 Lit/min.i.e.,22-25% of cardiac output.', 'role': 'assistant'}]