help!!! urgent :))
Given the functions f(n) = 25 and g(n) = 3(n − 1), combine them to create an arithmetic sequence, an, and solve for the 12th term.

a) an = 25 − 3(n − 1); a12 = −11
b) an = 25 − 3(n − 1); a12 = −8
c) an = 25 + 3(n − 1); a12 = 58
d) an = 25 + 3(n − 1); a12 = 61