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
Which one of the following does not produce cyanosis in the first year of life - 
Select and explain. 
A. Atrial septal defect, B. Hypoplastic left hea syndrome, C. Truncus aeriosus, D. Double outlet right ventricle
A: Atrial septal defect
Answer: A: Atrial septal defect 
Explanation: Ans. is 'a' i.e., Atrial septal defect