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: Medicine
Risk factor for the development of gastric Carcinoma among the following is 
Select and explain. 
A. Blood group O, B. Duodenal ulcer, C. Intestinal hyperplasia, D. Intestinal metaplasia type III
D: Intestinal metaplasia type III
Answer: D: Intestinal metaplasia type III 
Explanation: Risk factors are:Long-term ingestion of high concentration of nitrates.H.pyloriIntestinal metaplasia in patients with atrophic gastritis.Gastric ulcers and adenomatous polyps.Menetrier's disease.Patients with blood group A have a higher incidence of Ca stomach than blood group O.Note: duodenal ulcers are not associated with gastric cancer.Ref: Harrison's 18/e 765.