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
[{'content': 'Which of the following is used in tracking transfer of MS from mother to infant, to detect risk of early childhood caries? \nSelect and explain. \nA. Albans test, B. GC-Saliva check SM, C. Dentocult lactobacilli test, D. Fosdick calcium dissolution test', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]