Using the graph below, what are the common difference, the general term equation, and the 12th term of the arithmetic sequence? Hint: an = a1 + d(n − 1), where a1 is the first term and d is the common difference. (1 point) Arithmetic sequence represented by a graph in quadrant 4 with n on x axis and a sub n on y axis. Points at one comma negative two, two comma negative seven, and three comma negative twelve. d = 5, an = 5n − 3, a12 = 57 d = −5, an = 3 − 5n, a12 = −57 d = −6, an = 5 − 6n, a12 = −67 d = −5, an = 5n + 3, a12 = 63