This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
Non-motile bacteria include? 
Select and explain. 
A. Salmonella, B. Klebsiella, C. Citrobacter, D. Escherichia
B: Klebsiella
Answer: B: Klebsiella 
Explanation: Klebsiella: This genus consist of non-motile capsulated rods that grow well on ordinary media forming large dome-shaped mucoid colonies of varying degrees of sickness Page no 290 Salmonella : Salmonella is Gram-negative. They are motile with peritrichous flagella. They do not have capsule or spores but may possess fimbria Page no 274 Escherichia is a gram-negative straight rod arranged singly or in pairs, it is motile by peritrichous flagella though some m strains may be nonmotile. Capsule and fimbriae are found in some strains. and spores are not formed Page no 280 Citrobacter is motile bacillus which utilizes its flagella Ref: Ananthanarayan And Paniker's Textbook of microbiology Page no 280