A solid metallic cuboid of length $$9\ \text{cm}$$ and width $$8\ \text{cm}$$ is formed by melting a solid metallic cube of side $$6\ \text{cm}$$. The height of the cuboid is

A

$$4\ \text{cm}$$

B

$$2\ \text{cm}$$

C

$$6\ \text{cm}$$

D

$$3\ \text{cm}$$