Which of these could be the dimensions of a unit cube? Select all that apply.
A.1 ft. by 1 ft. by 1 ft.
B.1 in. by 2 in. by 1 in.
C.1 ft. by 1 in. by 1 cm
D.1 mm by 1 mm by 1 mm
E.1 m by 1 m by 2 m​