Consider the following sequence. Sn= 10 n (a) Find the first three terms of the sequence whose nth term is given. S110 $2=5 S3 x (b) Classify the sequence as arithmetic, geometric, both, or neither. O arithmetic O geometric both neither If arithmetic, give d; if geometric, give r; if both, give d followed by r. (If both, enter your answers as a comma-separated list. If neither, enter NONE