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 is seen in A/E 
Select and explain. 
A. Lad's band, B. Annular pancreas, C. Pancreatic pseudocyst, D. Diaphragmatic hernia
D: Diaphragmatic hernia
Answer: D: Diaphragmatic hernia 
Explanation: D i.e. Diaphragmatic hernia