Compound X $$(\text{C}_7\text{H}_{12}\text{O}_2)$$ gives i) a positive silver mirror test and ii) a yellow precipitate on treatment with $$\text{I}_2/\text{NaOH}$$. The compound X is

A

2-hydroxy-3,3-dimethylcyclopentanone

B

2,5-heptanedione

C

2,2-dimethyl-3-oxopentanal

D

2,2-dimethyl-4-oxopentanal