Which pair of expressions is equivalent to each other?
A
2 X 2 x 2 and 3²
B
6 X 6 X 6 X 6 and 4⁶
C
4 X 4 X 4 X 4 X 4 and 4⁵
D
8 X 8 X 8 X 8 X 8 X 8 and 8⁸​