Lucy cuts 4 squares with side length x in. from the corners of a 12 in. by 18 in. cardboard rectangle. She folds the remaining cardboard to make a tray that is x in. high. Write and simplify a polynomial function for the volume V of the tray in terms of x. A.4x3 – 30x2 54x B.4x3 – 60x2 216x C.4x2 – 30x 54 D.4x3 – 30x2 15x 54