Two triangles are shown to be congruent by identifying a combination of translations, rotations, or reflections that move one figure onto the other. If ΔDOG ≅ ΔRUN, which line segment must be congruent to NU? Why?

A) GO because the triangles are isosceles and two sides are congruent.
B) DO because the triangles are isosceles and two sides are congruent.
C) GO because corresponding parts of congruent triangles are congruent.
D) DO because corresponding parts of congruent triangles are congruent.