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': 'Boot shaped heart on chest X - ray is seen in- \nSelect and explain. \nA. Tetrofogy of fallot, B. TGA, C. TAPVC, D. PAPVC', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Tetrology of fallot Radiological findings of TQFi) Boot shaped heart (Coeur en Sabot)ii) Normal sized heart (no cardiomegaly)iii) Pulmonary oligemiaiv)Right aortic arch (in 25% cases).", 'role': 'assistant'}]