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
With regards to temperature requirement, most pathogenic bacteria are: 
Select and explain. 
A. Psychrophiles, B. Mesophiles, C. Cryophiles, D. Thermophiles
B: Mesophiles
Answer: B: Mesophiles 
Explanation: None