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': 'Drugs of choice for myoclonic epilepsy in pregnancy is: \nSelect and explain. \nA. Carbamazepine, B. Sodium valproate, C. Phenobarbitone, D. Phenytoin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Among the given options only sodium valproate can be used for myoclonic seizures. Carbamazepine and phenytoin can worsen these seizures whereas phenobarbitone is not effective. However, these days preferred drug is lorazepam. REF: HARRISONS 20TH ED.', 'role': 'assistant'}]