Microbiology General ded3f9fb Causative agent of acute rheumatic fever: A Group `A' b-hemolytic streptococcus B Group -B b-hemolytic streptococcus C Group -C b-hemolytic streptococcus D Group -D b-hemolytic streptococcus High-Yield Explanation Group `A' b-hemolytic streptococcus