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
Antibody found in patients of myaesthenia gravis is directed against - 
Select and explain. 
A. Acetycholine, B. Acetycholine receptors, C. Acetycholine vesicles in nerve terminal, D. Actin-myosin complex of the muscle
B: Acetycholine receptors
Answer: B: Acetycholine receptors 
Explanation: None