This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
[{'content': 'what is likely diagnosis of following CXR? \nSelect and explain. \nA. TOF, B. TAPVC, C. VSD, D. ASD', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Tetralogy of fallot Commonest cyanotic congenital hea disease in children above the age of two years constituting almost 75 % of all blue patients. Four constituents of tetra logy as described originally by Fallot consist of :- * 1. Ventricular septa! defect (VSD) # 2. Pulmonic stenosis # 3. overriding or dextroposed aoa, and # 4. Right ventricular hyperophy REF : HARRISONS 21ST ED', 'role': 'assistant'}]