This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
Which one of the following statement is true regarding pathogenicity of Mycobacteria species? 
Select and explain. 
A. M. tuberculosis is more pathogenic than M. bovis to humans, B. M. kansasii can cause disease indistinguishable from tuberculosis, C. M. africanum infection is acquired from environmental source, D. M. marinum is responsible for tubercular lymphadenopathy
B: M. kansasii can cause disease indistinguishable from tuberculosis
Answer: B: M. kansasii can cause disease indistinguishable from tuberculosis 
Explanation: Ans. is 'b' i.e., M. kansasii can cause disease indistinguishable from tuberculosis.Other choices:(a) M. tuberculosis and M. bovis are equally pathogenic.(b) M. africanum infection is acquired from human and cattles.(d) M. marinum causes swimming pool granuloma.