A closed metal box measure 30 cm $$\times$$ 20 cm $$\times$$ 10 cm. thickness of the metal is 1 cm. the volume of the metal required to make the box is:

A

1041 $$cm^3$$

B

6000 $$cm^3$$

C

4536 $$cm^3$$

D

1968 $$cm^3$$