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': "Tinel's sign is: \nSelect and explain. \nA. Loss of sensation, B. Loss of 2 point discrimination, C. Percussion produces tingling sensation, D. Not associated with carpel tunnel syndrome", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Procedure\n\nPatient is seated, elbow in flexion.\nEvaluator grasps wrist and taps the ulnar notch with reflex hammer.\n\nPositive Test\n\nAthlete complains of tingling sensation along forearm hand and fingers.\nIndicates ulnar nerve compromise.', 'role': 'assistant'}]