Rectangle ABCD is congruent to rectangle A"B"C"D" .

Which sequence of transformations could have been used to transform rectangle ABCD to produce ​ rectangle A"B"C"D" ​ ?

​A) Rectangle ABCD ​ was reflected across the y-axis and then across the x-axis.
​B) Rectangle ABCD ​ was translated 8 units left and then 7 units down.
​C) Rectangle ABCD ​ was rotated 180° around the origin and then translated 7 units down.
​D) Rectangle ABCD ​ was translated 2 units left and then 3 units down.