新生兒腦膜炎之檢體分離出β-hemolysis革蘭氏陽性球菌，catalase陰性，hippurate hydrolysis陽性，與Staphylococcus aureus垂直接種於BAP可觀察到箭頭形溶血現象，最可能是下列何種細菌？
Streptococcus pyogenes
Streptococcus agalactiae
Streptococcus dysgalactiae
Streptococcus pneumoniae
