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: Pediatrics
An 8 year old boy presented with fever and bilateral cervical lymphadenopathy with prior history of sore throat. There was no hepatomegaly. The peripheral blood smear shows > 20% lympho–plasmacytoid cells. The most likely diagnosis is – 
Select and explain. 
A. Influenza, B. Tuberculosis, C. Infectious mononucleosis, D. Acute lymphoblastic leukemia
C: Infectious mononucleosis
Answer: C: Infectious mononucleosis 
Explanation: None