Which rotation rule, if any, can be used to prove that pentagon a(0, 4), b(7, 4), c(9, 2), d(7, 0), e(0, 0) and pentagon a'(0, -4), b'(-7, -4), c'(-9, -2), d'(-7, 0), e'(0, 0) are congruent?

answer choices

a)(x, y) → (-x, y)
b)(x, y) → (x, -y)
c)(x, y) → (-x, -y)
d)the pentagons are not congruent.