Which of the following sets of tests provide the best differentiation of Erysipelothrix from Listeria monocytogenes? a. Gram-stained smear, oxidase, and optochin b. Gram-stained smear, catalase, and...

Which of the following sets of tests provide the best differentiation of Erysipelothrix from Listeria monocytogenes?

a. Gram-stained smear, oxidase, and optochin b. Gram-stained smear, catalase, and motility c. CAMP test, hydrogen sulfide production, esculin hydrolysis d. Reverse CAMP, gram-stained smear, b-hemolysis