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
Fibres of periodontal ligament embedded in the bone are 
Select and explain. 
A. Sharpey's fibres, B. Tomes fibres, C. Elastic fibres, D. Ray's fibres
A: Sharpey's fibres
Answer: A: Sharpey's fibres 
Explanation: None