This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
Incidence Of H. pylori in Gastric ulcer is 
Select and explain. 
A. 5%, B. 20%, C. 60%, D. 80%
C: 60%
Answer: C: 60% 
Explanation: H pylori produce cag A strain which results in gastric ulcer which finally results in gastric carcinoma, it causes 6 fold increase in incidence. Reference SRB 5th edition page no.845