This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
[{'content': 'All the following strains of Salmonella are motile by peritrichous flagella except \nSelect and explain. \nA. S. bongor, B. S. Gallinarum pullorum, C. S. choleraesuis, D. Salmonella enterica', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ceain members of the family Enterobacteriaceae are non-motile-Atypical E.coli, Klebsiella, Shigella, Yersinia pestis, and Salmonella gallinarum-pullorum Ref ganong's review of medical physiology 25e", 'role': 'assistant'}]