This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Radiology
[{'content': 'Egg in cup appearance is seen in - \nSelect and explain. \nA. TOF, B. MR, C. Constrictive pericarditis, D. Transposition of great vessels', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Egg in cup apperance is seen in constrictive pericarditis. Egg on side appearance is seen in TGA.', 'role': 'assistant'}]