This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiac and Pericardiac Imaging, Subject name: Radiology
[{'content': 'Egg on side appearance of heart is seen in the radiograph of? \nSelect and explain. \nA. TAPVC, B. TGA, C. ASD, D. VSD', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) TGARef: Sutton 7thed different pages. Pediatrics Radiology: The Requisites by Johan G. Blickman, Bruce R. Parker; M.D. Patrick D. Barnes p-52', 'role': 'assistant'}]