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': "Fasciculations are seen in - \nSelect and explain. \nA. Motor neuron disease, B. Duchenne's muscular dystrophy, C. Polymyositis, D. None of the above", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]