9. Mr. Hernandez dilates the triangle shown below by a scale factor of 2 with the origin as the center to obtain . Two of his students wrote the following statements about the triangles.
Student 1: and are similar right triangles; therefore, . Student 2: and are similar right triangles; therefore, . Which of Mr. Hernandez's students wrote a correct conclusion about the two triangles?
A. only student 1
B. only student 2
C. both student 1 and student 2
D. neither student 1 nor student 2