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
Chlolinomimetics are used in: 
Select and explain. 
A. Glaucoma., B. Myasthenia gravis., C. Post operative atony., D. All of the Above.
D: All of the Above.
Answer: D: All of the Above. 
Explanation: None