jw74780 jw74780 02-03-2017 Mathematics contestada What is the formula for the following arithmetic sequence? 12, 6, 0, -6, ... A. an = 12 + (-6)( n - 1) B. an = 12 + 6( n - 1) C. an = -6 + 12( n - 1) D. an = 6 + 12( n - 1)