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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Bacitracin sensitive streptococci:
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The correct answer is  Ans. (b) Streptococcus pyogenes Ref Ananthanarayan 8/e, p 207, 9/e, p 210 "Sensitivity to hacitracin is employed as a convenient method for differentiating Str. pyogenes from other hemolytic streptococci." For details see answer no 20 of chapter 8.