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
[{'content': 'The principal polypeptide that increase food intake are the following except - \nSelect and explain. \nA. Neuropeptide-Y, B. Leptin, C. Orexin-A, D. B-endophrin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]