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
Which of the following endocrine tumors is mocommonly seen in MEN-I: 
Select and explain. 
A. Insulinoma, B. Gastrinoma, C. Glucagonoma, D. Somatostatinoma
B: Gastrinoma
Answer: B: Gastrinoma 
Explanation: Answer is B (Gastrinoma): Amongst the options provided Gastrinomas are the most common association with MEN I.