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
Johne's bacillus is - 
Select and explain. 
A. Corynebacterium pseudotuberculosis, B. M. paratuberculosis, C. H. aegypticus, D. K. pneumoniae
B: M. paratuberculosis
Answer: B: M. paratuberculosis 
Explanation: Ans. is 'b' i.e., M. paratuberculosis * M. paratuberculosis is also known as Johne's bacillus.