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
In CNS, the myelination is carried out by: 
Select and explain. 
A. Schwann cells, B. Astrocytes, C. Oligodendrocytes, D. Microgila
C: Oligodendrocytes
Answer: C: Oligodendrocytes 
Explanation: None