This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
Which amongst the following biological agents carries the least potential for use as a biological weapon for microbial terrorism 
Select and explain. 
A. Plague (Yersinia pestis), B. Small pox (variola major), C. Botulism (Cl. Botulinum), D. Brucellosis (Brucella sp)
D: Brucellosis (Brucella sp)
Answer: D: Brucellosis (Brucella sp) 
Explanation: * Plague, small pox and botulism are category A bioterrorism agents. * Brucella is category B Ref: Baveja textbook of microbiology; 4th edition