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
Which of the following influence the ability of osteoclast to resorb bone matrix? 
Select and explain. 
A. cathepsin K and carbonic anhydrase, B. alkaline phosphatase, C. both the above, D. matrix metalloproteinase
A: cathepsin K and carbonic anhydrase
Answer: A: cathepsin K and carbonic anhydrase 
Explanation: None