Please help! What set of reflections and rotations would carry rectangle ABCD into itself?

1) Rotate 180°, reflect over the x-axis, reflect over the line y=x

2) Reflect over the y-axis, reflect over the x-axis, rotate 180°

3) Rotate 180°, reflect over the y-axis, reflect over the line y=x

4) Reflect over the x-axis, rotate 180°, reflect over the x-axis