This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Muscle Physiology, Subject name: Physiology
[{'content': 'In the length tension relationship of skeletal muscle, the length at which active tension is maximum is: \nSelect and explain. \nA. A, B. F, C. D, D. E', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) E(Ref: Guyton and Hall Physiology Review, 3rd ed/p.14)Active tension produced in the muscle is at point E.In the graph, A is the active tension curve.C is the passive tension curve.', 'role': 'assistant'}]