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 non collagenous protein of dentin prevents premature mineralization 
Select and explain. 
A. Decorin and Biglycans, B. Dentin Phosphoprotein, C. Dentin Sialoprotein, D. All of the above
A: Decorin and Biglycans
Answer: A: Decorin and Biglycans 
Explanation: None