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: Surgery
H. pylori causes ? 
Select and explain. 
A. Type A Gastritis, B. Type B gastritis, C. Autoimmune, D. Allergic Gastritis
B: Type B gastritis
Answer: B: Type B gastritis 
Explanation: Ans. is 'b' i.e., Type B gastritis