This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood, Subject name: Medicine
[{'content': 'A 19-year-old college student develops a severe sore throat, cervical lymphadenopathy, and atypical lymphocytes on blood film. A heterophil antibody test is positive. For the above patient with a hematologic abnormality, select the most likely diagnosis \nSelect and explain. \nA. hyperthyroidism, B. rectal cancer, C. infectious mononucleosis, D. acute myelogenous leukemia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Heterophil antibodies react against sheep red cells and are not absorbed out by the guinea pig kidney. They are positive in patients with infectious mononucleosis. In 90% of cases, liver enzymes are elevated. Examination of the blood film reveals a lymphocytosis with atypical lymphocytes.', 'role': 'assistant'}]