A carton designer is considering cost as she is comparing different shaped cartons. Which of these nets would create a cardboard carton that requires the least amount of cardboard for each cubic inch of volume? 8 in. x 10 in. x 10 in. 5 in. x 8 in. x 20 in. 4 in. x 10 in. x 20 in. 2 in. x 10 in. x 40 in. CLEAR CHECK 4