Which of the following best describes a similarity transformation in a plane?

A sequence of one or more rigid motions.

A sequence of rigid motions and/or dilations.

Any transformation that changes the area of a figure.

A sequence of one or more dilations.

Triangle $XYZ$ is rotated $90^\circ$ and then dilated by a scale factor of $k=5$ to create triangle $X'Y'Z'$. Which statement is true?

$\Delta XYZ$ is congruent to $\Delta X'Y'Z'$.

$\Delta XYZ$ is similar to $\Delta X'Y'Z'$.

$\Delta XYZ$ is larger than $\Delta X'Y'Z'$.

They are similar, but not congruent.

They are congruent, but not similar.

They are both congruent and similar.

They are neither congruent nor similar.

They are both congruent and similar.

They are neither congruent nor similar.