This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy & Physiology (Liver), Subject name: Surgery
Normal portal vein pressure is - 
Select and explain. 
A. 0-5 mmHg, B. 5-10mmHg, C. 10-15 mmHg, D. 15-20 mmHg
B: 5-10mmHg
Answer: B: 5-10mmHg 
Explanation: Ans. is 'b' i.e., 5-10 mmHg o Normal portal vein pressure in 5-10 mmHg