For each sequence, decide whether it could be arithmetic, geometric, or neither.a. 25, 5, 1,...b. 25, 19, 13,...c. 4, 9, 16,...d. 50, 60, 70,...e. 1, 3, 18,...For each sequence that is neither arithmetic nor geometric, how can you change a single number to make it an arithmetic sequence? A geometric sequence?