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: Medicine
What is the most common site of Gastrinoma in MEN-1 Syndrome? 
Select and explain. 
A. Stomach, B. Duodenum, C. Jejunum, D. Ileum
B: Duodenum
Answer: B: Duodenum 
Explanation: NET of Pancreas Tumor MC site Gastrinoma Duodenum (1st pa)>Pancreas Insulinoma Equally distributed in head, body and tail Glucagonoma Body and Tail of pancreas Somatostatinoma and PPoma Head of pancreas VIPoma Tail of pancreas