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
[{'content': 'Which of the following  bacteria do not invade host tissue cell? \nSelect and explain. \nA. T. denticola, B. P. intermedia, C. P. gingivalis, D. F. nucleatum', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]