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
Peripheral nerve regenerates at a rate of 
Select and explain. 
A. 0.2 mm/day, B. 1 mm/day, C. 2 mm/day, D. 0.5 nun/day
B: 1 mm/day
Answer: B: 1 mm/day 
Explanation: The axonal regeneration proceeds slowly at rate of 1-2 mm/day in human.