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
"L-form" phenomenon is most likely to occur in: 
Select and explain. 
A. Mycoplasma, B. Mycobacteria, C. Proteus, D. Pasteurella
A: Mycoplasma
Answer: A: Mycoplasma 
Explanation: Mycoplasma