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': 'Bacitracin sensitivity is used to differentiate ? \nSelect and explain. \nA. Group A Streptococcus from staphylococci, B. Group A streptococcus from other Beta hemolytic streptococci, C. Group A streptococcus from Gamma hemolytic streptococci., D. Group A streptococcus from Alpha hemolytic streptococci', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Group A streptococcus from other Beta hemolytic streptococci The bacitracin susceptibility test is used to distinguish Group A streptococci, from other streptococci. This test is used to determine the effect of small amount of bacitracin (0.04U) on an organism.", 'role': 'assistant'}]