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
[{'content': '21 yearold female presents with history of mild bilateral ptosis, proximal muscle weakness and easy fatiguability. Which amongst the following, is best in diagnosing this condition: March 2013 (b) \nSelect and explain. \nA. Muscle biopsy, B. Edrophonium test, C. Repetitive nerve stimulation test, D. Electromyography', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B i.e. Edrophonium test Myasthenia gravis Decreased myoneural junction transmission Features: Dysahria, Dysphagia, Proximal muscle weakness, Sensory modalities and deep tendon reflexes are NORMAL MC used cholinergic drugs: Pyridostigmine/neostigmine Surgical procedure (should be done in all cases): Thymectomy', 'role': 'assistant'}]