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 most outer covering of nerve fibres is called as: 
Select and explain. 
A. Neurolemma, B. Perineurium, C. Axolemma, D. Myelin sheath
B: Perineurium
Answer: B: Perineurium 
Explanation: None