a tour bus averaged 50 miles per hour between two cities on the first leg of a trip and 45 miles per hour on the return trip. the return trip took 1/2 hour longer. find the distance between the two cities

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.