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: Pharmacology
[{'content': 'All of the following antiepileptic can lead to weight loss except \nSelect and explain. \nA. Felbamate, B. Valproate, C. Zonisamide, D. Topiramate', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Zonisamide, Topiramate, Felbamate: causes weight loss.\n\n→ Topiramate is used with Phenteramine to treat obesity.\n\nSodium valproate, Perampanel, Gabapentin: causes weight\xa0 gain.', 'role': 'assistant'}]