Gram-negative bacteria are stained pink by the use of:
Correct answer: D. Safranin
- A. Crystal violet
- B. Gram's iodine
- C. Feulgen stain
- D. Safranin
Explanation
Option D is correct as gram-negative bacteria are not easily stained by primary dye (crystal violet) so a secondary dye (safranin or fuchsine) is required to dye them a pink or red color.
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