pH of a saturated solution of $$Ca(OH)_2$$ is 9. The solubility product $$(K_{sp}) of Ca(OH)_2$$ is:

A

$$0.25 \times 10^{-10}$$

B

$$0.125 \times 10^{-15}$$

C

$$0.5 \times 10^{-10}$$

D

$$0.5 \times 10^{-15}$$