Triangle xyz is translated by the rule (x + 1, y − 1) and then dilated by a scale factor of 4 centered at the origin. which statement describes the properties of triangles xyz and x''y''z'' after the transformations?

a) y and ∠y'' are congruent after the translation, but not after the dilation.

b) ∠y and ∠y'' are congruent after the dilation, but not after the translation.

c) segment yz and segment y double prime z double prime are proportional after the translation, but not after the dilation.

d) segment yz and segment y double prime z double prime are proportional after the dilation and congruent after the translation.