Plz help brain fam!

Quadrilateral EFGH was dilated and rotated 90 degrees clockwise about the origin form quadrilateral E'F'G'H'. Which part of the quadrilateral E'F'G'H' is congruent to quadrilateral EFGH?


A. It's angle measures

B. It's position on the grid

C. It's side length

D. It's area

Thanks!

:)