Assertion (A): Pentane-2,4-dione has a much higher enol content than propanone. Reason (R): The enol of pentane-2,4-dione is stabilised by conjugation of $\mathrm{C}=\mathrm{C}$ with $\mathrm{C}=\mathrm{O}$ and by intramolecular hydrogen bonding.

1. ABoth A and R are true and R is the correct explanation of A
2. BBoth A and R are true but R is not the correct explanation of A
3. CA is true but R is false
4. DA is false but R is true