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
In periodontal disease, ground substance is dissolved by 
Select and explain. 
A. Hyaluronidase, B. Coagulase, C. Phosphorylase, D. Acid phosphatase
A: Hyaluronidase
Answer: A: Hyaluronidase 
Explanation: None