A right rectangular prism has a volume of 48 ft3. Which of the following could not be the dimensions of the prism?

l = 2 ft, w = 2 ft, h = 12 ft
l = 2 ft, w = 4 ft, h = 6 ft
l = 3 ft, w = 2 ft, h = 8 ft
l = 4 ft, w = 3 ft, h = 3 ft