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
[{'content': 'Myoclonus in children is best treated by: \nSelect and explain. \nA. Clonazepam, B. Sodium Valproate, C. Phenobarbitone, D. Ethosuccimide', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 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.', 'role': 'assistant'}]