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
True about MEN-Ia) ↑ VMA in urineb) ↑ Calcitoninc) Hypergastrinemiad) Hyperprolactinaemiae) ↓ Ca2+ 
Select and explain. 
A. abc, B. ad, C. bc, D. acd
D: acd
Answer: D: acd 
Explanation: ↑ VMA is seen in → pheochromocytoma
Hypergastrinemia seen in → Pancreatic islet cell hyperplasia or adenoma (Gastrinoma)
Hyperprolactinemia is seen d/t → Pituitary adenoma (Prolactinoma)