Clara claims "all obtuse triangles are similar." Which statement best describes Clara's claim?

A. It is true because in every obtuse triangle the sum of two acute angles is less than 90
degrees.

B. It is true because in every obtuse triangle the side between the two acute angles is the
longest side.

C. It is false because two obtuse triangles could have sets of angles that are not equal.

D. It is false because in two obtuse triangles only the obtuse angles can be congruent,