Assertion [a]: Gram negative bacteria show staining with saffranin.
Reason [r]: Gram negative bacteria have an outer membrane with lipopolysaccharides.
- Both [a] and [r] are true and [r] is the correct reason for [a].
- Both [a] and [r] are true but [r] is not the correct reason for [a].
- Both [a] and [r] are false.
- [a] is true but [r] is false.