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
Fasciculations are seen in: 
Select and explain. 
A. Motor neuron disease, B. Duchenne's muscular dystrophy, C. Polymyositis, D. None of the above
A: Motor neuron disease
Answer: A: Motor neuron disease 
Explanation: Answer is A (Motor neuron disease): Fasciculation is a visible or palpable twitch within a single muscle due to spontaneous discharge of one motor unit. Disease of motor neurons are associated with fasciculations' - Harrison's