This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
The commonest site of rupture of abdominal aoic aneurysms is NOT RELATED - MEDICINE 
Select and explain. 
A. Anterior, B. Posterior, C. Left retroperitoneum, D. Right retroperitoneum
C: Left retroperitoneum
Answer: C: Left retroperitoneum 
Explanation: Abdominal aoic aneurysms can rupture anteriorly into the peritoneal cavity (20 per cent) or posterolaterally into the retroperitoneal space (80 per cent). The most common complications after open repair are cardiac (ischaemia and infarction) and respiratory (atelectasis and lower lobe consolidation)