which of the following represents a polygon that is two times the size of the original polygon?

A: (x' , y') = (0.2x,0.2y)

B: (x' , y') = (1/2x, 1/2y) <-- Fractions

C: (x' , y') = (4x,4y)

D: (x' , y') = (2x,2y)