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
The most sensitive test for diagnosis of myasthenia gravis is 
Select and explain. 
A. Tensilon test, B. Single Fiber Electro-myography, C. Repetitive Nerve Stimulation test, D. Elevated ACH receptor antibodies
B: Single Fiber Electro-myography
Answer: B: Single Fiber Electro-myography 
Explanation: Electromyography is most sensitive test for diagnosing myasthenia gravis