The dimensions of a box are (x + 2), (2x - 1) and (3x + 1). What is the volume of the box?
1)6x^3+11x^2-3x-2
2)6x+2
3)6x^3+11x^2+3x-2
4)6x^3-2
1)6x^3+11x^2-3x-2
2)6x+2
3)6x^3+11x^2+3x-2
4)6x^3-2