This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Microbiology Pa 1 (History, Microscopy, Stains and Structure and Physiology of Bacteria), Subject name: Microbiology
Non motile organism - 
Select and explain. 
A. E. coli, B. Vibrio cholera, C. Proteus vulgaris, D. Shigella dysentery
D: Shigella dysentery
Answer: D: Shigella dysentery 
Explanation: Entire Enterobacteriaceae family is motile (peritrichous flagella )except:- Shigella and Klebsiella., atypical e.coli, salmonella gallinarium, salmonella pullorum, yersenia pestis