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
Bacterial "finger printing" illustrate that periodontal pathogens are 
Select and explain. 
A. Contagious, B. Non-contagious, C. Transmissible within member of same colonies, D. Non transmissible
C: Transmissible within member of same colonies
Answer: C: Transmissible within member of same colonies 
Explanation: None