This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
Which of the following is not a cholinergic agent 
Select and explain. 
A. Galantamine, B. Donepezil, C. Tacrine, D. Piracetam
D: Piracetam
Answer: D: Piracetam 
Explanation: Ref: HL sharma 3rd ed pg no: 545 Piracetam, aniracetam are nootropic agents(sma drugs) used in Alzheimer's remaining drugs increase cholinergic activity in Alzheimer's