This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Physiology
[{'content': 'Oxygen consumption of myocardium is \nSelect and explain. \nA. 0.2 ml/kg/min, B. 2 ml/kg/min, C. 12 ml/kg/min, D. 20 ml/kg/min', 'role': 'user'}, {'content': "Answer: D \nExplanation: The basal O2 consumption by the myocardium is about 2 mL/ 100 g/min that is 20mL/kg/minRef: Ganong's Review of Medical Physiology Twenty-Third Edition Page No:519", 'role': 'assistant'}]