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: Pathology
Which of the following is cariostatic? 
Select and explain. 
A. Selenium, B. Magnesium, C. Cadmium, D. Molybdenum
D: Molybdenum
Answer: D: Molybdenum 
Explanation: None