This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
All are true about hepatopulmonary syndrome except 
Select and explain. 
A. Frequency in ESLDbis between 8-29%, B. Characterized by hypoxemia and anatomical shunting of blood, C. Only established treatment at present is OLT, D. A preoperative oxygen tension of <30mmHg alone is a predictor of disease
D: A preoperative oxygen tension of <30mmHg alone is a predictor of disease
Answer: D: A preoperative oxygen tension of <30mmHg alone is a predictor of disease 
Explanation: Severity in Hepatopulmonary syndrome depends upon liver disease, oxygenation defect and pulmonary vascular dilation Ref: Shackelford 7th edition Pg no : 1606-1608