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
[{'content': 'True about MEN-Ia) ↑ VMA in urineb) ↑ Calcitoninc) Hypergastrinemiad) Hyperprolactinaemiae) ↓ Ca2+ \nSelect and explain. \nA. abc, B. ad, C. bc, D. acd', 'role': 'user'}, {'content': 'Answer: D \nExplanation: ↑ VMA is seen in → pheochromocytoma\nHypergastrinemia seen in → Pancreatic islet cell hyperplasia or adenoma (Gastrinoma)\nHyperprolactinemia is seen d/t → Pituitary adenoma (Prolactinoma)', 'role': 'assistant'}]