This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
CD marker of Cytotoxic T Cell Marker is? 
Select and explain. 
A. CD4, B. CD8, C. CD21, D. CD45
B: CD8
Answer: B: CD8 
Explanation: ananthanarayanan textbook of microbiology 9th edition. *cytotoxic T cells with CD8 surface markers and MHC class 1 restriction can kill and lyse target cells carrying new or foreign antigen