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: Unknown
[{'content': 'Which of the following movements will not be affected by involvement of the L5 Nerve root - \nSelect and explain. \nA. Thigh adduction, B. Knee Flexion, C. Knee Extension, D. Toe Extension', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans-A', 'role': 'assistant'}]