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
Dental plaque adheres to the tooth because: 
Select and explain. 
A. Levans are gummy, B. Dextrans are insoluble and sticky, C. Plaque grows into the irregularities, D. Microorganisms produce sticky lipoproteins
B: Dextrans are insoluble and sticky
Answer: B: Dextrans are insoluble and sticky 
Explanation: None