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
The ratio of anaerobe to aerobes in stool is ? 9. The ratio of anaerobe to aerobes in stool is ? 
Select and explain. 
A. 10:01, B. 100:01:00, C. 1000:01:00, D. 10000:1
C: 1000:01:00
Answer: C: 1000:01:00 
Explanation: Ans. is 'c' i.e., 1000:1