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
EBV receptor mimics ? 
Select and explain. 
A. CD 20, B. CD 21, C. CD 22, D. CD 23
B: CD 21
Answer: B: CD 21 
Explanation: Ans. is 'b' i.e., CD 21