The length and breadth of a rectangular sheet of paper are 60 cm and 30 cm, respectively. A square of side 5 cm is cut and removed from the four corners of the sheet. The rest of the paper is folded to form a cuboid (without the top face). Find the volume of the cuboid so formed (in `cm^(3)`).

Options

A. `4x^(3)+80x^(2)-400x`
B. `400x +4x^(3)-80x^(2)`
C. `4x^(3)+80x^(2)+400x`
D. `400+4x^(3)-80x^(2)`

Answer

B