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: Biochemistry
[{'content': 'Hypergastrinemia is seen in all, EXCEPT: \nSelect and explain. \nA. Atrophic gastritis, B. Zollinger Ellison syndrome, C. Prolonged acid suppressive medications, D. Fasting', 'role': 'user'}, {'content': 'Answer: D \nExplanation: G cells - specialised endocrine cells secrete gastrin. Food especially protein, peptides and amino acids stimulate gastrin secretion. Fasting and increased gastric acidity inhibit gastrin release. High gastric pH is a strong stimulus for gastrin release. MUST KNOW: Hypergastrinemia is seen in: 1. Atrophic gastritis 2. Prolonged use of acid suppressive medications 3. Zollinger Ellison syndrome Ref: Sleisenger and Fordtrans, Edition-9, Page-7.', 'role': 'assistant'}]