Which of the following can be rightly classified as beta hemolytic Streptococci?
O Streptococcus pyogenes and Streptococcus agalactiae
O Streptococcus salivarus and Streptococcus bovis
O Streptococcus pneumoniae and Streptococcus pyogenes
O Streptococcus pneumoniae and Streptococcus mutans