The following are seen in Pneumoperitoneum except: (A) Football sign, (B) Till-aux sign, (C) Rigler's sign, (D) Cupola sign
Answer is B. 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.