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: Physiology
The regeneration of nerve fibres is possible in the
peripheral nervous system than the central nervous system because 
Select and explain. 
A. Presence of neurilemmal sheath in peripheral nerve, B. Presence of neurilemmal sheath in central nervous system, C. The absence of myelin sheath in the central nervous system, D. Disturbed vascular supply
A: Presence of neurilemmal sheath in peripheral nerve
Answer: A: Presence of neurilemmal sheath in peripheral nerve 
Explanation: None