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: Surgery
In neurapraxia, return of function occurs by: 
Select and explain. 
A. 1 week, B. 2-4 week, C. >4 weeks, D. None of the above
B: 2-4 week
Answer: B: 2-4 week 
Explanation: Neurapraxia is defined as the temporary failure of nerve function without physical axonal disruption. Axon degeneration does not occur. Return of normal axonal function occurs over hours to months, often in the 2- to 4-week range. Ref: Schwaz's principle of surgery 9th edition, chapter 42.