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: Microbiology
Which does not has a known animal reservoir 
Select and explain. 
A. Brucella melitensis, B. Bordettela peussis, C. Pasturella multocida, D. Francisella tularensis
B: Bordettela peussis
Answer: B: Bordettela peussis 
Explanation: Ans. is. 'b' i. e., Bordettela peussis