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: Pathology
[{'content': 'Type B gastritis -a) Body predominant b) Fundus predominantc)  Antral predominant d) H. pylorie) Autoimmune \nSelect and explain. \nA. ab, B. bc, C. bd, D. cd', 'role': 'user'}, {'content': "Answer: D \nExplanation: Chronic atrophic gastritis\xa0\n\nChronic atrophic gastritis is a process of chronic inflammation of the stomach mucosa, leading to loss of gastric glandular cells and their eventual replacement by intestinal and fibrous tissue.\nChronic atrophic gastritis is classified according to the predominant site of involvement :-\n1.\xa0 Type 'A' gastritis\nIt refers to body - predominant form involving fundus and body with sparing of antrum.\nIt is also called as autoimmune gastritis as the damage is due to autoimmunity.\nIt is less common of the two forms of chronic atrophic gastritis.\n2.\xa0 Type `B' gastritis\nIt is called as antral predominant gastritis as antrum is involved predominantly. However, it is misnomer as the inflammatory process may progress to body and fundus and causing pangastritis.\nH. pylori infection is the cause of type B gastritis.\nIt is the most common cause of chronic gastritis and by for the most important etiological association with chronic gastritis is chronic infection with H. pylori.", 'role': 'assistant'}]