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
[{'content': 'Which of the following is not found in meningococci \nSelect and explain. \nA. Capsule, B. Lipopolysacchride, C. Plasmid, D. Pili', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Plasmid', 'role': 'assistant'}]