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: Medicine
[{'content': 'Which of the following endocrine tumors is mocommonly seen in MEN-I: \nSelect and explain. \nA. Insulinoma, B. Gastrinoma, C. Glucagonoma, D. Somatostatinoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer is B (Gastrinoma): Amongst the options provided Gastrinomas are the most common association with MEN I.', 'role': 'assistant'}]