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
What percentage of the blood flow to the liver is supplied by the hepatic aery - 
Select and explain. 
A. 90%, B. 20%, C. 40%, D. 60%
B: 20%
Answer: B: 20% 
Explanation: Ans. is 'b' i.e., 20 %