This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Pharmacology
Which of the following anti-epileptic drug has the highest teratogenic potential? 
Select and explain. 
A. Valproate, B. Carbamazepine, C. Phenytoin, D. Lamotrigine
A: Valproate
Answer: A: Valproate 
Explanation: Anti epileptic with highest risk of teratogenicity - Valproate - causes neural tube defects Anti epileptic with lowest risk of teratogenicity- Lamotrigine Levetiracetam