This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
All of the following are anticholinergics, except 
Select and explain. 
A. Ipratropium bromide, B. Dicyclomine, C. Atropine, D. Amphetamine
D: Amphetamine
Answer: D: Amphetamine 
Explanation: None