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: Pathology
[{'content': 'The attachment of the Actinomyces species to the tooth surface is facilitated by: \nSelect and explain. \nA. Fimbriae., B. Cillia, C. Flagella., D. Capsule.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]