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
[{'content': 'Spinal segment in knee jerk include all of the following except : \nSelect and explain. \nA. L1, B. L2, C. L3, D. L4', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is A (L1): Knee jerk is associated with spinal segments L3, L4 and according to some L2 also.', 'role': 'assistant'}]