A 2-year-old boy with a history of recurrent skin abscesses develops posterior cervical lymphadenitis. Results of a flow cytometry assay measuring reduction of dihydrorhodamine to the fluorescent compound rhodamine (DHR) by resting or phorbol myristate acetate (PMA)-stimulated neutrophils are shown. Which of the following is the most likely causal organism?

A) Streptococcus pyogenes
B) Neisseria meningitidis
C) Staphylococcus aureus
D) Candida albicans