Heather wants to buy a new refrigerator, but she only has room for one that is 18 ft3 or less. Which set of dimensions represent a refrigerator that Heather can buy?
A)2 ft. wide x 2.5 ft. long x 3 ft. tall
B)2 ft. wide x 2.5 ft. long x 4.5 ft. tall
C)2.5 ft wide x 3 ft. long x 4 ft. tall
D)2.5 ft. wide x 2 ft. long x 4 ft. tall