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: Surgery
[{'content': 'What percentage of the blood flow to the liver is supplied by the hepatic artery - \nSelect and explain. \nA. 90%, B. 20%, C. 40%, D. 60%', 'role': 'user'}, {'content': 'Answer: B \nExplanation: • Weight: 1800 gm in men and 1400 gm in women\n• Total blood flow: 1.5 L/min\n• Free pressure in a hepatic vein: 1-2 mm Hg\n• Liver can store up to maximum of 65 gm of glycogen/kg of liver tissue.\n• Account for 4% of body weight, consumes about 28% of total body blood flow and 20% of the total oxygen consumed by the body.\n• Expends 20% of the total kilocalories used by the whole body.', 'role': 'assistant'}]