What set of reflections would carry triangle ABC onto itself?

y-axis, x-axis, y-axis, x-axis
x-axis, y=x, y-axis, x-axis
x-axis, y-axis, x-axis
y=x, x-axis, x-axis

What set of reflections would carry triangle ABC onto itself yaxis xaxis yaxis xaxis xaxis yx yaxis xaxis xaxis yaxis xaxis yx xaxis xaxis class=