A Microbiologist Is Reading a Sputum Culture on the Bench

Multiple Choice

A microbiologist is reading a sputum culture on the bench. There is growth on the BAP and CHOC plates, but no growth on the MAC plate. The colonies growing on the BAP have discolored the media to a green color around and under the colonies. What organism could this be?

A) Escherichia coli
B) Staphylococcus aureus
C) Haemophilus influenzae
D) Streptococcus pneumoniae