() which rules represent a transformation that maps one shape onto another to establish their congruence? select all of the possible answers.

a) a dilation by scale factor of 3 about the origin.

b) a translation to the right 2 and down 6.

c) a reflection across the line y=2.

d) a counter-closckwise rotation of 90 degrees about the origin.

e) a horizontal stretch by a factor of 2 about the origin.