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
[{'content': 'Incidence Of H. pylori in Gastric ulcer is \nSelect and explain. \nA. 5%, B. 20%, C. 60%, D. 80%', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 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', 'role': 'assistant'}]