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': 'The ratio of anaerobe to aerobes in stool is ? 9. The ratio of anaerobe to aerobes in stool is ? \nSelect and explain. \nA. 10:01, B. 100:01:00, C. 1000:01:00, D. 10000:1', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., 1000:1", 'role': 'assistant'}]