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 principal polypeptide that increase food intake are the following except - 
Select and explain. 
A. Neuropeptide-Y, B. Leptin, C. Orexin-A, D. B-endophrin
B: Leptin
Answer: B: Leptin 
Explanation: None