A pinpoint, gray-white colony is isolated as >100,000 colonies/mL from the urine of an 89-year-old leukemic patient. The colony stains as palisading gram-positive rods. The organism should be
A) catalase negative and urea positive.
B) catalase positive and urea positive.
C) catalase negative and urea negative.
D) catalase positive and urea negative.
Correct Answer:
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