Multiple Choice Question

In the diagram below, triangle RST has been reflected vertically and horizontally and then dilated to produce triangle XYZ .

Triangle R-S-T and a triangle X-Y-Z are horizontally aligned. Vertex R and X are facing to each other.

Which statement must be true?

A. RS/XY = RT/XZ

B. m∠Y = m∠Z

C. m∠S = m∠Z

D. RS/XZ = RT/YZ