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. Cilia, C. Flagella, D. Pseudopodia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]