This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
Myoclonus in children is best treated by: 
Select and explain. 
A. Clonazepam, B. Sodium Valproate, C. Phenobarbitone, D. Ethosuccimide
B: Sodium Valproate
Answer: B: Sodium Valproate 
Explanation: Myoclonic and atonic seizures-control is often incomplete, but valproate is the drug of choice. Myoclonic Seizures. Myoclonic seizures are characterized by brief, jerking spasms of a muscle or muscle group. They often occur with atonic seizures, which cause sudden muscle limpness. The word "myoclonic" combines the Greek prefix for muscle -- "myo" -- with "clonus," which means twitching. REF: KD TRIPATHI 8TH ED.