Problem: A 65-year-old man with rapid-cycling bipolar disorder is admitted to the hospital with dizziness, ataxia, and ophthalmoplegia. Drug toxicity is suspected. Labs show hyponatremia and thrombocytopenia. On which medication has this patient likely overdosed? Need Assignment Help? A. DivalproexB. LithiumC. LamotrigineD. Carbamazepine