This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': "A new born presents with deepening cyanosis at bih, with congestive hea failure and normal first hea sound. X-ray reveals cardiomegaly diagnosis is - \nSelect and explain. \nA. Tetralogy of fallot's, B. Ebstein anomally, C. Transposition of great vessels, D. Tricuspid atresia", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Transposition of great vessels", 'role': 'assistant'}]