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': "The cardiac output can be determined by all except \nSelect and explain. \nA. Fick's principle, B. V/Q ratio, C. Echocardiography, D. Thermodilution", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Methods to determine the Cardiac output\n\nFlowmeter\nCardiometer\n\n-\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Indirect method- Used in humans\n\nFick’s principle method\nIndicator dilution method\nThermodilution method\nDoppler echocardiography\nCineradiography', 'role': 'assistant'}]