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: Social & Preventive Medicine
[{'content': 'Not included under category A Bioterrorism \nSelect and explain. \nA. Clostridium batulinum, B. Burk holderia mallei, C. Yessinia Pestis, D. Bacillus Anthracis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]