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: Microbiology
[{'content': 'Which of the following statement about Bacteroides is TRUE? \nSelect and explain. \nA. It is strictly aerobic, B. It can cause peritonitis, C. It is a gram positive bacilli, D. Presence in stool culture indicates need for treatment', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Bacteroides are commonly responsible for abdominal infections such as subphrenic abscess, hepatic abscess, peritonitis, appendicitis and brain abscess. Ref: Sherris Medical Microbiology By Kenneth J. Ryan, 5th Edition, Chapter 29', 'role': 'assistant'}]