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: Microbiology
[{'content': 'A girl from shimla presented to OPD with fever, hypotension, malaise and axillary and inguinal lymphadenopathy. Culture in glucose broth shows stalactite growth. Most likely causative organism is - \nSelect and explain. \nA. Yersinia pestis, B. Francisella tularensis, C. Brucella abortus, D. Coxiella burnetti', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]