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': 'A fourteen year old boy is admitted with history of fever, icterus, conjunctival suffusion and haematuria for twenty days. Which of the following serological test can be of diagnostic utility - \nSelect and explain. \nA. Widal test, B. Microscopic Agglutination Test, C. Paul Bunnell test, D. Weil felix reaction', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]