Which statement proves that this shape has symmetry?

A capital letter z. A vertical line t goes through point B at the center. Transformation 1:
Reflect the figure
across line t.

Transformation 2:
Rotate the figure 90°
around point B.

This figure does not have symmetry.

Applying Transformation 1
carries the figure onto itself.

Applying Transformation 2
carries the figure onto itself.

Applying Transformation 2
twice carries the figure onto itself.

The statement "Applying Transformation 1 carries the figure onto itself" proves that this shape has symmetry.