This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Psychiatric Illness, Subject name: Pharmacology
[{'content': "Drug of choice for treatment of Alzhiemer's disease is: \nSelect and explain. \nA. Donepezil, B. Atropine, C. Physostigmine, D. Fluoxetine", 'role': 'user'}, {'content': "Answer: A \nExplanation: Drug of choice for treatment of Alzhiemer's disease is: Donepezil Atropine is DOC for organophosphate poisoning Physostigmine is DOC for atropine poisoning Fluoxetine is DOC for depression AcHE inhibiting drugs Donepezil Rivastigmine Galantamine", 'role': 'assistant'}]