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: Radiology
"Double bubble" sign with air shadows absent in distal bowel coils on X-ray abdomen is characteristic of 
Select and explain. 
A. Duodenal webs, B. Duodenal atresia, C. CHPS, D. All of the above
B: Duodenal atresia
Answer: B: Duodenal atresia 
Explanation: Ans. Duodenal atresia