A storage unit is advertised as being 100 ft.³ which of the following best describes what this means

A. The storage unit can be used to keep all of your extra materials
B. The storage unit is too small.
C. The storage unit can hold 100 boxes that are one cubic foot.
D. The storage unit can hold 100 items.

C. The storage unit can hold 100 boxes that are one cubic foot.