Step 1: Analyse the pain pattern. Epigastric pain that is relieved by food (and the classic hunger pain / night pain that improves on eating) is characteristic of duodenal ulcer, in contrast to gastric ulcer where pain typically worsens with food.
Step 2: Use the history. The patient has been operated twice for duodenal ulcer and responds to proton pump inhibitors, indicating recurrent acid-peptic disease of the duodenum.
Step 3: Eliminate the other options. Gastric ulcer pain is aggravated by eating. Chronic pancreatitis pain radiates to the back but is not relieved by food and is not controlled simply by PPIs. Atrophic gastritis causes reduced acid and is associated with malignancy risk, not food-relieved ulcer pain.
Step 4: Conclusion. The food-relieved pain, recurrent surgeries, and PPI response point to recurrent duodenal ulcer.