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 facultative anaerobic bacteria are those who are: 
Select and explain. 
A. Unable to grow in the presence of oxygen, B. Unable to grow in the absence of oxygen, C. Able to grow in the presence of carbon dioxide, D. Able to grow in the presence or absence of oxygen
D: Able to grow in the presence or absence of oxygen
Answer: D: Able to grow in the presence or absence of oxygen 
Explanation: None