The measures of the outer dimensions of a closed metal box are given as 15 cm $$\times$$ 18 cm $$\times$$ 8 cm. The thickness of the metal is 1.5 cm. What will be the volume of the metal required to make the box?

A

1680 $$cm^{3}$$

B

950 $$cm^{3}$$

C

1440 $$cm^{3}$$

D

1260 $$cm^{3}$$