Problem: A 75-year-old male is brought to the clinic by his daughter for evaluation. The patient had a recent bout of gastroenteritis and since has become increasingly confused, tremorous, and is unsteady on his feet. Upon reviewing the patient's medications, the Advanced Practice Nurse notes which medication may be the cause of the gentleman's symptoms and recent decline. Want Online Help? O a. Levadopa O b. Lithium O c. Zofran O d. Donepezil (Aricept)