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
Drug of choice for tonic-clonic seizures is ? 
Select and explain. 
A. Sodium valproate, B. Carbemazepine, C. Phenobarbitone, D. Felbamate
A: Sodium valproate
Answer: A: Sodium valproate 
Explanation: Ans. is 'a' i.e., Sodium valproate