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
Diagnosis of Myasthenia gravis done by using 
Select and explain. 
A. Edrophonium, B. Neostigmine, C. Succinyl choline, D. Atropine
A: Edrophonium
Answer: A: Edrophonium 
Explanation: Refer kDT 6/e p 104 Myasthenia gravis can be differentiated from cholinergic crisis with the help of sho acting anticholinesterase agent,edrophonium. It improves the symptoms in Myasthenia gravis whereas was on the condition in case of cholinergic crisis. Neostigmine is used in the treatment of Myasthenia