下列何菌在厭氧血液培養基上，最可能長出灰白或淡黃色的粗糙型臼齒狀（Molar tooth shape）微小菌落？
Actinomyces israelii
Staphylococcus epidermidis
Corynebacterium diphtheriae
Streptococcus agalactiae
