This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Gynaecology & Obstetrics
[{'content': 'Lowest risk of malformations is seen with which of the following antiepileptic drug? \nSelect and explain. \nA. Phenobarbitone, B. Valproate, C. Lamotrigine, D. Carbamazepine', 'role': 'user'}, {'content': "Answer: C \nExplanation: A metanalysis of 31 studies found lamotrigine and levetiracetam to carry the lowest risk of malformations(Ref: William's Obstetrics; 25th edition)", 'role': 'assistant'}]