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
Initiation of caries by streptococcus  mutans is by the production of 
Select and explain. 
A. Dextranase and soluble dextran, B. Insoluble dextan and glucosyl transferase, C. Soluble dextran and glycosyl transferase, D. None of the above
B: Insoluble dextan and glucosyl transferase
Answer: B: Insoluble dextan and glucosyl transferase 
Explanation: None