The perimeter of a square is represented by the expression 32x - 12.8. Which of the following expressions is not equivalent to the perimeter?

A. 4(8x - 3.2)

B. (8x - 3.2) + (8x - 3.2) + (8x - 3.2) + (8x - 3.2)

C. 32x - 12.8

D. -12.8x + 32