<prompt> Antibiotic used to for sensitivity in identification of streptococcus pyogenes?BacitracinNovobiocinPenicillinOptochin  <response>: Ans. is a i.e., Bacitracin Senstivity to bacitracin is employed as a convenient method for differentiating str. pyogenes from other hemolytic streptococci Maxteds observation. 