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
All of the following are are features of VIPoma, except: 
Select and explain. 
A. Hypokalemia, B. Hypochlorhydria, C. Flushing, D. Hypocalcemia
D: Hypocalcemia
Answer: D: Hypocalcemia 
Explanation: The principal symptoms are large-volume diarrhea severe enough to cause hypokalemia, dehydration, hypochlorhydria, and flushing. Patients frequently have hyperglycemia and hypercalcemia. Ref: Harrisons Principles of Internal Medicine, 18th Edition, Page 3068.