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
[{'content': 'Paul bunnel reaction is a type of \nSelect and explain. \nA. Agglutination, B. CF, C. Precipitation, D. Flocculation test', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Agglutination test Paul Bunnell test is tube agglutination test.", 'role': 'assistant'}]