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: Dental
Not significant in pathogenicity of periodotic problems? 
Select and explain. 
A. Endotoxins from live bacteria, B. Endotoxins from dead bacteria, C. Microbial interactions, D. Enzyme by microbes
A: Endotoxins from live bacteria
Answer: A: Endotoxins from live bacteria 
Explanation: None