<prompt> Most common bacteria responsible for the following condition seen in a child who presents with high grade fever and sore throat is?Group A streptococcusGroup B streptococcusCorynebacterium diphtheriaStaphylococcus aureus  <response>: Enlarged congested tonsils with palatal petechiae- suggestive of acute pharyngotonsillitis due to Streptococcus pyogenes :group A beta hemolytic streptococcal infection 