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
The triad of diabetes, gallstones and steatorrhoea is associated with which one of the following tumours? 
Select and explain. 
A. Gastrinomas, B. Somatostationomas, C. VIPomas, D. Glucagonomas
B: Somatostationomas
Answer: B: Somatostationomas 
Explanation: None