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: Pathology
[{'content': 'Plethoric lung fields are seen in the all of the following except: September 2009 \nSelect and explain. \nA. Ebstein anomaly, B. VSD, C. Total anomalous pulmonary venous connection, D. ASD', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. A: Ebstein anomalyChest radiographs can reveal the following in ebstein's anomaly:Normal findingsCardiomegalySmall aoic root and main pulmonary aery shadowDecreased pulmonary vasculatureLarge right atrium", 'role': 'assistant'}]