This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Obstetrics, Subject name: Gynaecology & Obstetrics
Which of the following is true about epilepsy in pregnancy? 
Select and explain. 
A. Sodium valproate is the drug of choice., B. Therapeutic drug monitoring is not required., C. Folic acid supplementation prevents risk of NTD in these patients, D. Lamotrigine is the most teratogenic drug.
C: Folic acid supplementation prevents risk of NTD in these patients
Answer: C: Folic acid supplementation prevents risk of NTD in these patients 
Explanation: Sodium valproate is the most teratogenic drug. Lamotrigene is the DOC. All anticonvulsant drugs are associated with congenital anomalies.Therapeutic drug monitoring is required. Vitamin K 10 mg/day orally from 36 weeks should be given to mother.