This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Stomach and aerial supply of abdomen, Subject name: Anatomy
A posteriorly perforating ulcer in the pyloric antrum of the stomach is likely to produce initial localized peritonitis or abscess formation in the 
Select and explain. 
A. Greater sac, B. Right subhepatic/hepatorenal space (pouch of Morison), C. Omental bursa, D. Right subphrenic space
C: Omental bursa
Answer: C: Omental bursa 
Explanation: Stomach rupture posteriorly causes peritonitis or abcess formation in lesser sac or omental bursa whereas rupture anteriorly causes abscess formation in greater sac whereas in supine posture abcess formation occurs in pouch of Morison which is dependent pa of stomach.