An architect planned to construct two similar stone pyramid structures in a park. the figure below shows the front view of the pyramids in her plan, but there is an error in the dimensions:

two similar scalene triangles pqr and abc with angle p congruent to angle a, angle q congruent to angle b, and qr and bc as the bases of the triangles. the length of pq is 6 feet, the length of qr is 9.5 feet, and the length of rp is 7.5 feet. the length of ab is 4 feet, the length of bc is 7 feet, and the length of ca is 5 feet.

which of the following changes should she make to the length of side rq to correct her error?

change the length of side rq to 9 feet
change the length of side rq to 10.5 feet
change the length of side rq to 8 feet
change the length of side rq to 11.5 feet