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': 'The causative agent of plague- \nSelect and explain. \nA. Yersinia pestis, B. Yersinia enterocolitica, C. Yersinia pseudotuberculosis, D. Pasteurella septica', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Infection caused by Yersinia genus is divided into\n\ni. Plague - It is a deadly infectious disease caused by Yersinia pestis.\nii. Vers in os it is characterized by infectious diarrhea, enteritis, ileitis and occasionally sep\nIt is caused by Yersinia enterocolitis (most common) and Yersinia pseudotuberculosis', 'role': 'assistant'}]