This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
Myasthenia gravis is associated with- 
Select and explain. 
A. Antibodies against Ach receptors, B. Decreased myosin, C. Absent troponin C, D. Increased myoneural junction transmission
A: Antibodies against Ach receptors
Answer: A: Antibodies against Ach receptors 
Explanation: *MG is an autoimmune disease most commonly caused by antibodies to Ach receptors in the post junctional membrane of neuromuscular junction Ref Harrison20th edition pg 2445