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': 'The triad of diabetes, gallstones and steatorrhoea is associated with which one of the following tumours? \nSelect and explain. \nA. Gastrinomas, B. Somatostationomas, C. VIPomas, D. Glucagonomas', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]