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': 'Bacitracin sensitivity is used to differentiate - \nSelect and explain. \nA. Group A streptococcus from staphylococcus, B. Group A streptococcus from other Beta hymolytic streptococci, C. Group A streptococcus from Gamma hemolytic streptococci., D. Group A streptococcus from Alpha hemolytic streptocci', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Group A streptococcus from other Beta hymolytic streptococci o Lets discuss each option one by oneStaphylococci and streptococci are differentiated by catalase test.Bacitracin sensitivity is used to differentiate streptococcus pyogenes (group A streptococcus) from other beta hemolytic streptococci.Alpha hemolytic and Gamma hemolytic streptococci are differentiated from Beta hemolytic streptocci, on the basis ofhemolysis.Following flow chart will help in the diagnosis of gram (+)ve cocci.", 'role': 'assistant'}]