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
Seven sheathed flagella is seen in - 
Select and explain. 
A. V. cholera, B. H. pylori, C. Pseudomonas aeruginosa, D. Spirochetes
B: H. pylori
Answer: B: H. pylori 
Explanation: None