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: Unknown
[{'content': 'Normal portal venous pressure is - \nSelect and explain. \nA. 1-2 mmHg, B. 2-5 mmHg, C. 10-12 mmHg, D. 15-17 mmHg', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans- B The normal pressure in portal vein is 2-5 mmHg or 10-15 cm saline.Q Portal hypertension is defined as portal pressure > 10mmHg or 30 cm saline. Q', 'role': 'assistant'}]