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
Chlorhexidine is a useful mouth wash as 
Select and explain. 
A. It prevents plaque accumulation, B. It prevents bacterial proliferation, C. It breaks down plaque matrix, D. It causes hemostatsis
B: It prevents bacterial proliferation
Answer: B: It prevents bacterial proliferation 
Explanation: None