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: Microbiology
HIV virus primarily effets: 
Select and explain. 
A. CD4 + T cells, B. CD 8 cells, C. Lymphocytes, D. Plasma cells
A: CD4 + T cells
Answer: A: CD4 + T cells 
Explanation: CD4 + T cells