Which of the following dimensions will give the rectangular box with a square base and no top the greatest volume, considering it is made from 3 m² of wood?
(a) Side length of the square base (x) = 0.5 m, Height (h) = 6 m
(b) Side length of the square base (x) = 1 m, Height (h) = 1 m
(c) Side length of the square base (x) = 0.75 m, Height (h) = 1.5 m
(d) Side length of the square base (x) = 0.6 m, Height (h) = 2.5 m
(e) Side length of the square base (x) = 1.25 m, Height (h) = 0.6 m