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
Snyder's test measures 
Select and explain. 
A. Amount of acid produced, B. Number of new caries lesion, C. Buffering action of saliva, D. Antibiotic activity of saliva
A: Amount of acid produced
Answer: A: Amount of acid produced 
Explanation: None