text: The causative agent of anthrax is B.<unk> , a nonmotile, Gram-positive, aerobic or facultatively anaerobic, endospore-forming, rod-shaped bacterium. The spores of B.<unk> , which can remain dormant in the environment for decades, are the infectious form, but this vegetative B.<unk>  rarely causes disease. The<unk>  may enter the body through the skin, lungs, gastrointestinal system or by injection, after which they will travel to the lymph nodes. The virulence factors will facilitate the translocation of the toxins to the cytosol. The natural reservoirs of<unk>  include humans, mammals, herbivores, reptiles, and birds.
option_0: Bacillus anthracis
option_1: Rhodococcus equi
option_2: Legionella
option_3: Pseudomonas
option_4: Pseudomonas aeruginosa
option_5: Legionella micdadei
option_6: Burkholderia pseudomallei
option_7: Mycobacterium tuberculosis