This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Surgery
Tinnels sign indicates: 
Select and explain. 
A. Atrophy of nerves, B. Neuroma, C. Injury to nerve, D. Regeneration of nerves
D: Regeneration of nerves
Answer: D: Regeneration of nerves 
Explanation: Ans: d (Regeneration of nerves)Ref: Schwartz surgery, 7th ed, p. 1885