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
[{'content': 'What is the most common site of Gastrinoma in MEN-1 Syndrome? \nSelect and explain. \nA. Stomach, B. Duodenum, C. Jejunum, D. Ileum', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 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', 'role': 'assistant'}]