If a Pinpoint Colony on Blood Agar After 24 Hours

Multiple Choice

If a pinpoint colony on blood agar after 24 hours of incubation is isolated,and if the colony is oxidase-,urease-,and indole-negative,and also exhibits bipolar staining on Gram stain,then the suspect bioterror agent is most likely:

A) Bacillus anthracis.
B) Francisella tularensis.
C) Brucella spp.
D) Yersinia pestis.