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