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: Pathology
[{'content': 'Most commonly seen in MEN 1? \nSelect and explain. \nA. Insulinoma, B. Gastrinoma, C. Glucagonoma, D. Somatostatinoma', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is b' i.e., Gastrinoma Amongst the options provided Gastrinomas are the most common association with MEN I.", 'role': 'assistant'}]