In Caring for a Stage IV Pressure Ulcer,the Nurse Assesses

In caring for a stage IV pressure ulcer,the nurse assesses the purulent drainage as creamy yellow with a necrotic odor.The nurse is aware that this type of exudate is probably caused by:

A) Proteus.
B) Bacteroides.
C) Staphylococcus.
D) Pseudomonas.