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
True about H. Pylori- 
Select and explain. 
A. It is flagellated, B. Involved in causation of peptic ulcer disease, C. Hypergastrinemia caused by it, D. All
D: All
Answer: D: All 
Explanation: Ans. is `All' `a' i.e., It is flagellated; 'b' i.e., Involved in causation of peptic ulcer disease;`c' i.e., Hypergastrinemia caused by it . H. pylori is a Gram negative, flagellated bacteria and it is motile by lophotrichous flagella. . More than 80% of duodenal ulcers and 60% of gastric ulcers are related to H. pylori colonization. Antral colonization of H. pylori diminishes the number of somatostatin - producing cells. Since somatostatin inhibits gastrin release, gastrin levels are higher (hypergastrinemia) than normal in H. pylori - positive persons. . Eradication of H. pylon leads to improved life style because it reduces the likelihood of relapse of ulcer disease.