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: Surgery
The following are seen in Pneumoperitoneum except 
Select and explain. 
A. Football sign, B. Till-aux sign, C. Rigler's sign, D. Cupola sign
B: Till-aux sign
Answer: B: Till-aux sign 
Explanation: Signs of Pneumoperitoneum :

Football sign - Collection of air in the centre of abdomen over flied collection.
Rigler's sign - Visualisation of air outling bowel wall on either side.
Cupola sign - Large amount of gas under diaphragm.