A 42-year-old male with chronic epigastric discomfort undergoes upper endoscopy revealing mild gastritis. Gastric biopsy shows normal cuboidal-to-columnar cells with apical membrane-bound secretion granules within glands. Vital signs are stable (BP 128/82, HR 78, RR 14, Temp 37.2°C). Serum gastrin level is 95 pg/mL (normal). Helicobacter pylori testing is negative. From which anatomic region of the stomach was this specimen most likely obtained?

1. A)Pyloric region
2. B)Columns of Morgagni
3. C)Cardiac region
4. D)Greater omentum
5. E)Fundic regionGABARITO