This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
[{'content': 'How many muscle fibers are there in one motor unit in eye? \nSelect and explain. \nA. 15, B. 30, C. 5, D. 50', 'role': 'user'}, {'content': 'Answer: C \nExplanation: No of muscle fibers ina motor unit are usually less than 10 Motor unit is the no of muscle fibers innervated by single neuron Ref:Guyton and Hall textbook of medical physiology 12th edition,page number:85,86,87', 'role': 'assistant'}]