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
The neutralization of saliva is due to 
Select and explain. 
A. Mucin, B. Ammonia, C. Amino a cids, D. Bicarbonates
D: Bicarbonates
Answer: D: Bicarbonates 
Explanation: None