Find the Values for Each of the Dimensions of an Open-Top

Find the values for each of the dimensions of an open-top box of length x, width y, and height (in inches) such that the box requires the least amount of material to make. ​

A) length = 8 inches
Width = 8 inches
Height = 4 inches
B) length = 4 inches
Width = 8 inches
Height = 8 inches
C) length = 8 inches
Width = 4 inches
Height = 8 inches
D) length = 4 inches
Width = 4 inches
Height = 16 inches
E) length = 16 inches
Width = 4 inches
Height = 4 inches