In the known arithmetic sequence {an}, Sn is the sum of the first n terms. If S16 > 0 and S17 < 0, then when SN is the largest, the value of n is () A. 16B. 9C. 8D. 10

In the known arithmetic sequence {an}, Sn is the sum of the first n terms. If S16 > 0 and S17 < 0, then when SN is the largest, the value of n is () A. 16B. 9C. 8D. 10

In ∵ arithmetic sequence {an}, S16 > 0 and S17 < 0, a8 + A9 > 0, A9 < 0, a8 > 0, the first 8 items and the largest number of the sequence are selected C