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Assertion [a]: Gram negative bacteria show staining with saffranin.
Reason [r]: Gram negative bacteria have an outer membrane with lipopolysaccharides.

  1. Both [a] and [r] are true and [r] is the correct reason for [a].
  2. Both [a] and [r] are true but [r] is not the correct reason for [a].
  3. Both [a] and [r] are false.
  4. [a] is true but [r] is false.
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