If the sum of nnn terms of an AP is Sn=3n2+2nS_n = 3n^2 + 2nSn=3n2+2n, what is the nthn^{th}nth term ana_nan?
6n−16n-16n−1
6n+16n+16n+1
3n−13n-13n−1
3n+13n+13n+1