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
In atresia of cardiac end of stomach, X-ray chest is best done with: 
Select and explain. 
A. Conray 240, B. Urograffin, C. Barium sulphate, D. Dianosil
D: Dianosil
Answer: D: Dianosil 
Explanation: Ans. Dianosil