<prompt> Lancefield group of streptococci belongs to:M-proteinCarbohydrate C antigen on cell- wallBile solubilitySugar fermentation  <response>: Carbohydrate C antigen on cell- wall Ref: Ananthnarayan-6thEdPg 188 Hemolytic streptococci were classified by Lancefield serologically into groups based on the nature of Carbohydrate antigen on the cell wall. There are 20 groups, A to V, identified without I J. The great majority of hemolytic streptococci that produce human infections belong to group A Hemolytic streptococci of group A are called as Streptococcus. Pyogen 