This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET Jan 2020, Subject name: Surgery
Most common pancreatic endocrine neoplasm: 
Select and explain. 
A. Insulinoma, B. Gastrinoma, C. VIPoma, D. Glucagonoma
A: Insulinoma
Answer: A: Insulinoma 
Explanation: M/C NET of Pancreases - Non-Functional (PPOMA) M/C functional NET of Pancreas -Insulinoma MC Functional Enteropancreatic NET in MEN 1 - Gastrinoma > Insulinoma M/C functional & Malignant NET of Pancreas - Gastrinoma IOC for localization of NET - SRS (Somatostatin receptor Scintigraphy)