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
Which of the following antiepileptic is also a free radical scavenger? 
Select and explain. 
A. Levetiracetam, B. Topiramate, C. Zonisamide, D. Gabapentin
C: Zonisamide
Answer: C: Zonisamide 
Explanation: Zonisamide is a Na+ channel blocker & also a free radical scavenger.