Cheryl works as a hotel maid. the number of hotel rooms she cleans is directly proportional to the number of hours she works. the graph shows that r rooms are cleaned in t hours. using the graph below answer the following questions under it

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.