A 28-year-old woman is planning a pregnancy. She has a history of focal epilepsy which is well controlled on Sodium Valproate 500mg BD. What is the most important advice regarding her medication?AContinue Valproate at the lowest effective dose and start Folic Acid 5mg ODBSwitch to Carbamazepine before conceptionCSwitch to Lamotrigine or Levetiracetam before conceptionDStop all anti-epileptic medication during the first trimesterEContinue Valproate and arrange detailed fetal anomaly scanningCheck my answer