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: Radiology
[{'content': "Sitting duck heart is radiological finding of \nSelect and explain. \nA. TAPVC, B. Persistent truncus arteriosus, C. Ebstein's anomaly, D. Constrictive pericarditis", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Sitting duck heart -\xa0Persistent truncus arteriosus.\nJug handle appearance - Primary pulmonary hypertension.', 'role': 'assistant'}]