Question: In the pathophysiology of peptic ulcer. What is the FALSE? 
 Options:  <1> Much of the gastro-duodenal ulcers can be attributed to H. pylori infection or mucosal injury by NSAIDs. <2> H. pylori is not related to the development of gastric lymphoma. <3> The transmission of H. pylori occurs from person to person via oral-oral or fecal-oral. <4> A lower educational level and a low socioeconomic status predispose to higher rates of colonization. <5> The incidence of gastric adenocarcinoma is higher in patients with H. pylori.
2