Please Read the Clinical Scenario, and Then Answer the Question

Multiple Choice

Please read the clinical scenario, and then answer the question that follow to become familiar with the traditional NCLEX question format.
Mr. Nowak is a homeless patient who presented to your clinic today with an injury to his left arm. He injured it on an old piece of scrap metal. His wound is red, hot, and tender with purulent drainage. You swab the site and send it to the laboratory for microbial analysis.
-Mr.Nowak's lab results return positive for Staphylococcus.You understand that the culture most likely required growth on a complex medium,consisting of

A) an exact chemical formula.
B) a simple pure compound.
C) at least one ingredient that is not chemically defined.
D) chemical inhibitors.