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': 'All of the following are true for Yersinia pestis EXCEPT: March 2013 \nSelect and explain. \nA. Gram positive, B. Non motile, C. Non sporing, D. Pleomorphic', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A i.e. Gram positive Yersinia pestis is sho, plump, Gram-negative with rounded end and convex sides.', 'role': 'assistant'}]