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
Specific type of cells found in infectious mononucleosis: 
Select and explain. 
A. Downey cells., B. Raquet cells., C. Arbiskov cells., D. None of the above.
A: Downey cells.
Answer: A: Downey cells. 
Explanation: None