What are the dimensions of the rectangular container, without a cover, with a capacity of 20m3 and the length of its base equal to twice that of its width? The material used for the base costs 30 dol.
A) 10m x 5m x 2m
B) 4m x 2m x 5m
C) 8m x 4m x 2m
D) 6m x 3m x 3m