This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
[{'content': "Most common site of intra peritoneal abscess? \nSelect and explain. \nA. Morrison's pouch, B. Omental bursa, C. Pelvic region, D. Left subhepatic pouch", 'role': 'user'}, {'content': "Answer: C \nExplanation: Pelvic abscess is the most common intraoeritoneal abscess(50-60%).Causes include- appendicitis,pelvic infections,sequelae of diffuse peritonitis,post operative and other abdominal causes.Organisms include Bacteroides fragilis,E.coli,anaerobic streptococci. Reference :SRB's manual of surgery,5th edition,page no:574.", 'role': 'assistant'}]