This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pediatrics
[{'content': '7 day old baby presented in emergency depament with unconciousness, cyanosis and 85% oxygen saturation. The diagnosis _______ \nSelect and explain. \nA. Tetrology of fallot, B. TGA, C. TAPVC, D. PDA', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In TGA there will be decreased oxygen saturation,cyanosis. Ref : Ghai essential of pediatrics, eighth edition, p.no:424', 'role': 'assistant'}]