Which box uses less cardboard, and how much less cardboard does it use?
A
The box on the box 1 uses 90 in. squared less cardboard.B
The box on the box 1 uses 30 in. squared less cardboard.C
The box on the box 2 uses 90 in. squared less cardboard.D
The box on the box 2 uses 30 in. squared less cardboard.