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: Surgery
[{'content': 'Which of the following is most common and malignant neuroendocrine tumour of pancreas? \nSelect and explain. \nA. Gastrinoma, B. Glucagonoma, C. Insulinoma, D. VIPoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer- C. InsulinomaInsulinomas are the most common pancreatic neuroendocrine tumor, but only l0% are malignant.Gastrin-producing tumor (gastrinoma) are the most common malignant pancreatic neuroendocrine tumor.', 'role': 'assistant'}]