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': 'Which of the following antiepileptic is also a free radical scavenger? \nSelect and explain. \nA. Levetiracetam, B. Topiramate, C. Zonisamide, D. Gabapentin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Zonisamide is a Na+ channel blocker & also a free radical scavenger.', 'role': 'assistant'}]