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
All the following are obligate anaerobes except? 
Select and explain. 
A. Actinomycetes, B. Bacteriodes, C. Clostridium, D. Pseudomonas
D: Pseudomonas
Answer: D: Pseudomonas 
Explanation: Pseudomonas is obligate aerobe.