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
Which of the following can be used treat post operative gastric paresis 
Select and explain. 
A. Atropine, B. Methacoline, C. Bethanecol, D. Oxtremorine
C: Bethanecol
Answer: C: Bethanecol 
Explanation: Bethanechol is a parasympathomimetic that acts on M3 receptors of Gastric smooth muscle to increase gut motility.