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': 'Myosin filament has a fixed length of \nSelect and explain. \nA. 0.16nm, B. 1.6 microm, C. 16nm, D. 1.6mm', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Myosin filament is about 1.6 micrometers in length Ref:Guyton and Hall textbook of medical physiology 12th edition,page number:85,86,87,88', 'role': 'assistant'}]