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
Which of the following is not a complication of helicobacter pylori 
Select and explain. 
A. GERD, B. Peptic ulcer disease, C. Maltoma, D. Chronic gastritis
A: GERD
Answer: A: GERD 
Explanation: None