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: Pathology
What are gitter cells - 
Select and explain. 
A. Astrocytes, B. Macroglia, C. Modified macrophages in CNS, D. Oligodendrocytes
C: Modified macrophages in CNS
Answer: C: Modified macrophages in CNS 
Explanation: None