Kim performed a transformation on triangle ABC to create triangle A'B'C', as shown in the figure below:

Triangles ABC and A prime B prime C prime are shown. A is at 5, 4. B is at 6, 9. C is at 2, 8. A prime is at 4, negative 5. B p

What transformation did Kim perform to create triangle A'B'C'? (5 points)

Select one:
a. Reflection across the x‐axis
b. Rotation of 270 degrees counterclockwise about the origin
c. Reflection across the y‐axis
d. Rotation of 90 degrees counterclockwise about the origin