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': 'Which one of the following does not produce cyanosis in the first year of life? \nSelect and explain. \nA. Atrial septal defect, B. Hypoplastic left heart syndrome, C. Truncus arteriosus, D. Double outlet right ventricle', 'role': 'user'}, {'content': "Answer: A \nExplanation: a. Atrial septal defect(Ref: Nelson's 20/e p 2189, Ghai 8/e p 413)Apart from ASD, rest of the 3 heart diseases are cyanotic heart diseases.", 'role': 'assistant'}]