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
Plaque is considered as infection because 
Select and explain. 
A. Antibiotics prevents its formation, B. Its presence is evidence of bacterial growth, C. It is communicable between experimental animals and probably humans, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None