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
[{'content': 'All are true about hepatopulmonary syndrome except \nSelect and explain. \nA. 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', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Severity in Hepatopulmonary syndrome depends upon liver disease, oxygenation defect and pulmonary vascular dilation Ref: Shackelford 7th edition Pg no : 1606-1608', 'role': 'assistant'}]