Staphylococcus is: (A) Gram - positive cocci, (B) Gram - negative cocci, (C) Gram - positive bacillus, (D) Gram - negative bacillus
Answer is A. Gram positive bacteria 

There are 6 classic gram-positive bacteria that cause human disease.


Of these 2 are cocci


Staphylococci
Streptococci (including anaerobic peptostreptococci)


Other 4 are bacilli


Corynebacterium
Bacillus
Clostridium
Listeria