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: Medicine
Not a feature of triad of hepatopulmonary syndrome 
Select and explain. 
A. Liver disease, B. Hypoxemia, C. Pulmonary arteriovenous shunting, D. Cardiac dysfunction
D: Cardiac dysfunction
Answer: D: Cardiac dysfunction 
Explanation: None