Solve the Problem. -A Box with an Open Top Is to Be Constructed

Multiple Choice

Solve the problem.
-A box with an open top is to be constructed from a rectangular piece of cardboard with dimensions 13 inches by 20 inches by cutting out equal squares of side x at each corner and then folding up the sides as in the figure. Express the volume V of the box as a function of x.

A) V(x) = x(13 - x) (20 - x)
B) V(x) = (13 - x) (20 - x)
C) V(x) = (13 - 2x) (20 - 2x)
D) V(x) = x(13 - 2x) (20 - 2x)