This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Which antiepileptic drug is least secreted in breast milk ? 
Select and explain. 
A. Ethosuximide, B. Clonazepam, C. Gabapentin, D. Carbamazepine
B: Clonazepam
Answer: B: Clonazepam 
Explanation: Ans. is 'b' i.e., Clonazepam