This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Anatomy
[{'content': 'The virulence factor of P.aeruginosa , endotoxin A acts by \nSelect and explain. \nA. Type 3 secretion system, B. Inhibiting protein syntesis, C. Acts on toll like receptors, D. Biofilm formation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: It prevents protein synthesis by inhibiting elongation factor 2', 'role': 'assistant'}]