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 following statements are true with reference to Mycoplasma except - 
Select and explain. 
A. They are the smallest prokaryotic organisms that can grow in cell free culture media, B. They are obligate intracellular organisms, C. They lack a cell wall, D. They are resistant to Beta-lactam drugs
B: They are obligate intracellular organisms
Answer: B: They are obligate intracellular organisms 
Explanation: None