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 is used in tracking transfer of MS from mother to infant, to detect risk of early childhood caries? 
Select and explain. 
A. Albans test, B. GC-Saliva check SM, C. Dentocult lactobacilli test, D. Fosdick calcium dissolution test
B: GC-Saliva check SM
Answer: B: GC-Saliva check SM 
Explanation: None