This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hepatobiliary and Pancreatic Sx, Subject name: Surgery
[{'content': 'Most common functional neuroendocrine tumor of pancreas in MEN1: \nSelect and explain. \nA. Glucagonoma, B. Gastrinoma, C. VIPoma, D. Somatostatinoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: NEURO ENDOCRINE TUMORS (NET) OF PANCREAS M/c Neuroendocrine tumor (NET): Non- functional (PPoma) M/c functional Neuroendocrine tumor: Insulinoma M/c functional & malignant NET in MEN 1: Gastrinoma. MC Functional Enteropancreatic NET in MEN 1 - Gastrinoma > Insulinoma SRS- Somatostatin receptor scintigraphy- IOC for All of the neuroendocrine tumors except Insulinoma', 'role': 'assistant'}]