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': 'Egg in cup appearance is seen in \nSelect and explain. \nA. TGA, B. TAPVC, C. Constrictive pericarditis, D. TOF', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Egg in cup - Constrictive pericarditis\nEgg on side - Uncorrected TGA', 'role': 'assistant'}]