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
[{'content': 'Commonest sites of intraabdominal abscess : \nSelect and explain. \nA. Subphrenic, B. Paracolic, C. Pelvis, D. Retroperitoneal', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The pelvis is the commonest site of intrabdominal abscess because of 2 reasons\n\nbecause the vermiform appendix is often pelvic in position.\nbecause the fallopian tubes are frequent sites of infection.', 'role': 'assistant'}]