A 20-Kg Child Takes Valproic Acid (Depakote)for Seizures and Has

A 20-kg child takes valproic acid (Depakote) for seizures and has had regular dose increases with a current dose of 250 mg twice daily.The child continues to have one to two seizures each week along with significant drowsiness that interferes with school participation.The primary care NP should contact the child's neurologist to discuss:

A) obtaining a serum valproic acid level.
B) changing the medication to gabapentin (Neurontin) .
C) increasing the valproic acid by 5 mg per kg of weight.
D) adding lamotrigine (Lamictal) to this child's drug regimen.