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: Medicine
Which of the following is unusual for myasthenia gravis? 
Select and explain. 
A. Anitbody binds to acetylcholine receptor, B. Ab interferes with binding of ACH to receptors, C. Increased acetylcholine concentration at neuromuscular junction, D. There is increase in post synaptic membrane fold
D: There is increase in post synaptic membrane fold
Answer: D: There is increase in post synaptic membrane fold 
Explanation: None