Consider These Medications: Carbamazepine (Tegretol), Lamotrigine (Lamictal), Gabapentin (Neurontin)

Consider these medications: carbamazepine (Tegretol) , lamotrigine (Lamictal) , gabapentin (Neurontin) . Which medication below also belongs with this group?

A) Galantamine hydrobromide (Reminyl)
B) Valproate (Depakene)
C) Buspirone hydrochloride (Bustab)
D) Rivastigmine hydrogen tartrate (Exelon)