On a sunny afternoon, a 10-meter tall billboard casts a shadow that is 6 meters long. at the same time a nearby building casts a shadow that is 4 meters long.

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.