Rectangle abcd is congruent to rectangle .

which sequence of transformations could have been used to transform rectangle abcd to produce rectangle ?

a.
rectangle abcd was translated 8 units left and then 7 units down.

b.
rectangle abcd was reflected across the y-axis and then across the x-axis.

c.
rectangle abcd was translated 2 units left and then 3 units down.

d.
rectangle abcd was rotated 180° around the origin and then translated 7 units down.