quadrilateral abcd underwent a sequence of transformations to give quadrilateral a′b′c′d′. which transformations could have taken place?
a.
a reflection across the x-axis followed by a reflection across the y-axis
b.
a translation 10 units down followed by a translation 8 units to the right
c.
a rotation 90° counterclockwise about the origin followed by a reflection across the y-axis
d.
a reflection across the line y = x followed by a reflection across the line y = -x