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
Increased C-peptide is seen in - 
Select and explain. 
A. Glucagoma, B. Insulinoma, C. Gastrinoma, D. Hepatoma
B: Insulinoma
Answer: B: Insulinoma 
Explanation: None