Whether the sequence 1 3 ,0,1,−2… is arithmetic, geometric, or neither. find the next three terms of the sequence. type your answer in the blank to the left. a. neither; 7, -20, 61 b. geometric; 7, -20, 61 c. arithmetic; −1 3 ,11 3 ,3 d. geometric; −31 3 ,−55 9 ,−9 7 27