The organism pictured below was a Gram-positive rod isolated from a sore on the hand of a fish market employee. It is shown on triple sugar iron agar. What is the most likely identification if it is catalase negative and non-motile?
a) Listeria monocytogenes
b) Bacillus anthracis
c) Corynebacterium diphtheriae
d) Erysipelothrix rhuziopathiae