This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Myasthenia Gravis and Muscular dystrophy, Subject name: Medicine
[{'content': "All of following are examples of proximal muscle weakness EXCEPT? \nSelect and explain. \nA. Myasthenia gravis, B. Thyroid myopathy, C. Myotonic dystrophy, D. Duchenne's muscular dystrophy", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Myasthenia gravis Features Eye muscle weakness, Ptosis, Diplopia In contrast, all myopathies have a proximal weakness (an exception being Myotonic dystrophy, which has a distal weakness).', 'role': 'assistant'}]