4. The two figures are congruent.a. Label the points A', B' and C' that correspond to A, B, and C in the figure on the right.CBAb. If segment AB measures 2 cm, how long is segment A' B' ? Explain.C. The point D is shown in addition to A and C. How can you find the point D' thatcorresponds to D? Explain your reasoning.