Which of the following organisms is negative for catalase, indole, and arginine dihydrolase tests and pits the agar on a sheep blood agar plate?

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E.corrodens can be recognized in culture by its bleachlike odor.The organism does not utilize glucose or other carbohydrates and is catalase-negative.However, it reduces nitrate to nitrite and hydrolyzes both ornithine and lysine and pits the agar on a sheep blood plate.

Which of the Following Organisms Is Negative for Catalase, Indole