This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
[{'content': 'Classification of staphylococcus is based on - \nSelect and explain. \nA. Catalase test, B. Coagulase test, C. Mannitol fermentation, D. Optochin sensitivity', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Coagulase test * Medically important staphylococci that causing human disease are divided into two groups1. Coagulase positive: Staphylococcus aureus.2. Coagulase negative: Staphylococcus epidermidis, Staphylococcus haemolyticus, Staphylococcus saprophyticus.", 'role': 'assistant'}]