This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Microbiology
[{'content': 'All of the following are the main virulence factors of Pseudomonas aeruginosa except \nSelect and explain. \nA. Type III secretion system, B. Proteases, C. Enterotoxin, D. Phospholipases', 'role': 'user'}, {'content': 'Answer: C \nExplanation: .', 'role': 'assistant'}]