A 59-year-old man is recovering in ICU following an aortic valve transplant two days ago. A median sternotomy was performed. His vitals are: temperature 102.9 F, HR 100, RR 16, BP 90/60. There is erythema around the surgical site. Palpation elicits a clicking sound, with a crunching sensation. Which of the following is the most likely explanation for these findings?
A) Gram-positive cocci in clusters
B) Gram-positive rod, non-spore-forming, motile
C) Gram-positive rod, spore-forming, aerobic, motile
D) Gram-positive rod, spore-forming, anaerobic, motile
E) Gram-positive rod, spore-forming, anaerobic, non-motile
