Given the recursive formula, find the first four terms: an= -3•an-1 a1=45 A -45, -135, -405, -1215
B 45, 42, 39, 36
C 45, 135, 405, 1215
D 45, -135, 405, -1215

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.