Which sequence of transformations performed on shape I confirms the congruence of shape II and shape I?

A.
a reflection across the y-axis and then a translation down 16 units
B.
a 90° counterclockwise rotation about the origin and then a translation down 8 units
C.
a 90° clockwise rotation about the origin and then a translation left 16 units
D.
a 180° rotation about the origin and then a translation left 8 units