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
Predisposing factors for stomach carcinoma ? 
Select and explain. 
A. Gastric ulcer, B. Pernicious anemia & achlorhydria, C. Hiatus hernia, D. All
B: Pernicious anemia & achlorhydria
Answer: B: Pernicious anemia & achlorhydria 
Explanation: Answer 'b' i.e. Pernicious anemia & achlorhydria