Find the next three terms in the arthmitic sequence 1 1/4, 2 1/2, 3 3/4, 5, 6 1/4... I don´t get this? I need help. Can somebody help me?

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.