This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: D.O.C, Subject name: Pharmacology
[{'content': "Drug of choice for treatment of Alzheimer's disease is: \nSelect and explain. \nA. Atropine, B. Donepezil, C. Physostigmine, D. Fluoxetine", 'role': 'user'}, {'content': "Answer: B \nExplanation: (Ref: Katzung 14th ed. P 1063)DOC for Alzheimer's disease: Donepezil (reversible AchEsterase inhibitor)Other Ach Esterase inhibitor used in treatment of Alzheimer's disease is Gallantamine, Rivastigmine.", 'role': 'assistant'}]