Which choice best describes the combination of transformations that must be

applied to the graph of to obtain the graph of ?
a. a reflection in the x-axis and a vertical translation 1 unit down
b. a reflection in the x-axis and a vertical translation 1 unit up
c. a reflection in the y-axis and a vertical translation 1 unit down
d. a reflection in the y-axis and a vertical translation 1 unit up